diff --git a/BUILD b/BUILD
index 186d664395a..c52a95cf91b 100644
--- a/BUILD
+++ b/BUILD
@@ -448,75 +448,67 @@ grpc_cc_library(
     srcs = [
         "src/core/lib/profiling/basic_timers.cc",
         "src/core/lib/profiling/stap_timers.cc",
-        "src/core/lib/support/alloc.cc",
-        "src/core/lib/support/arena.cc",
-        "src/core/lib/support/atm.cc",
-        "src/core/lib/support/avl.cc",
-        "src/core/lib/support/cmdline.cc",
-        "src/core/lib/support/cpu_iphone.cc",
-        "src/core/lib/support/cpu_linux.cc",
-        "src/core/lib/support/cpu_posix.cc",
-        "src/core/lib/support/cpu_windows.cc",
-        "src/core/lib/support/env_linux.cc",
-        "src/core/lib/support/env_posix.cc",
-        "src/core/lib/support/env_windows.cc",
-        "src/core/lib/support/fork.cc",
-        "src/core/lib/support/host_port.cc",
-        "src/core/lib/support/log.cc",
-        "src/core/lib/support/log_android.cc",
-        "src/core/lib/support/log_linux.cc",
-        "src/core/lib/support/log_posix.cc",
-        "src/core/lib/support/log_windows.cc",
-        "src/core/lib/support/mpscq.cc",
-        "src/core/lib/support/murmur_hash.cc",
-        "src/core/lib/support/string.cc",
-        "src/core/lib/support/string_posix.cc",
-        "src/core/lib/support/string_util_windows.cc",
-        "src/core/lib/support/string_windows.cc",
-        "src/core/lib/support/subprocess_posix.cc",
-        "src/core/lib/support/subprocess_windows.cc",
-        "src/core/lib/support/sync.cc",
-        "src/core/lib/support/sync_posix.cc",
-        "src/core/lib/support/sync_windows.cc",
-        "src/core/lib/support/thd.cc",
-        "src/core/lib/support/thd_posix.cc",
-        "src/core/lib/support/thd_windows.cc",
-        "src/core/lib/support/time.cc",
-        "src/core/lib/support/time_posix.cc",
-        "src/core/lib/support/time_precise.cc",
-        "src/core/lib/support/time_windows.cc",
-        "src/core/lib/support/tls_pthread.cc",
-        "src/core/lib/support/tmpfile_msys.cc",
-        "src/core/lib/support/tmpfile_posix.cc",
-        "src/core/lib/support/tmpfile_windows.cc",
-        "src/core/lib/support/wrap_memcpy.cc",
+        "src/core/lib/gpr/alloc.cc",
+        "src/core/lib/gpr/arena.cc",
+        "src/core/lib/gpr/atm.cc",
+        "src/core/lib/gpr/avl.cc",
+        "src/core/lib/gpr/cmdline.cc",
+        "src/core/lib/gpr/cpu_iphone.cc",
+        "src/core/lib/gpr/cpu_linux.cc",
+        "src/core/lib/gpr/cpu_posix.cc",
+        "src/core/lib/gpr/cpu_windows.cc",
+        "src/core/lib/gpr/env_linux.cc",
+        "src/core/lib/gpr/env_posix.cc",
+        "src/core/lib/gpr/env_windows.cc",
+        "src/core/lib/gpr/fork.cc",
+        "src/core/lib/gpr/host_port.cc",
+        "src/core/lib/gpr/log.cc",
+        "src/core/lib/gpr/log_android.cc",
+        "src/core/lib/gpr/log_linux.cc",
+        "src/core/lib/gpr/log_posix.cc",
+        "src/core/lib/gpr/log_windows.cc",
+        "src/core/lib/gpr/mpscq.cc",
+        "src/core/lib/gpr/murmur_hash.cc",
+        "src/core/lib/gpr/string.cc",
+        "src/core/lib/gpr/string_posix.cc",
+        "src/core/lib/gpr/string_util_windows.cc",
+        "src/core/lib/gpr/string_windows.cc",
+        "src/core/lib/gpr/subprocess_posix.cc",
+        "src/core/lib/gpr/subprocess_windows.cc",
+        "src/core/lib/gpr/sync.cc",
+        "src/core/lib/gpr/sync_posix.cc",
+        "src/core/lib/gpr/sync_windows.cc",
+        "src/core/lib/gpr/thd.cc",
+        "src/core/lib/gpr/thd_posix.cc",
+        "src/core/lib/gpr/thd_windows.cc",
+        "src/core/lib/gpr/time.cc",
+        "src/core/lib/gpr/time_posix.cc",
+        "src/core/lib/gpr/time_precise.cc",
+        "src/core/lib/gpr/time_windows.cc",
+        "src/core/lib/gpr/tls_pthread.cc",
+        "src/core/lib/gpr/tmpfile_msys.cc",
+        "src/core/lib/gpr/tmpfile_posix.cc",
+        "src/core/lib/gpr/tmpfile_windows.cc",
+        "src/core/lib/gpr/wrap_memcpy.cc",
     ],
     hdrs = [
         "src/core/lib/profiling/timers.h",
-        "src/core/lib/support/abstract.h",
-        "src/core/lib/support/arena.h",
-        "src/core/lib/support/atomic.h",
-        "src/core/lib/support/atomic_with_atm.h",
-        "src/core/lib/support/atomic_with_std.h",
-        "src/core/lib/support/env.h",
-        "src/core/lib/support/fork.h",
-        "src/core/lib/support/manual_constructor.h",
-        "src/core/lib/support/memory.h",
-        "src/core/lib/support/mpscq.h",
-        "src/core/lib/support/murmur_hash.h",
-        "src/core/lib/support/spinlock.h",
-        "src/core/lib/support/string.h",
-        "src/core/lib/support/string_windows.h",
-        "src/core/lib/support/thd_internal.h",
-        "src/core/lib/support/time_precise.h",
-        "src/core/lib/support/tmpfile.h",
-        "src/core/lib/support/vector.h",
+        "src/core/lib/gpr/arena.h",
+        "src/core/lib/gpr/env.h",
+        "src/core/lib/gpr/fork.h",
+        "src/core/lib/gpr/mpscq.h",
+        "src/core/lib/gpr/murmur_hash.h",
+        "src/core/lib/gpr/spinlock.h",
+        "src/core/lib/gpr/string.h",
+        "src/core/lib/gpr/string_windows.h",
+        "src/core/lib/gpr/thd_internal.h",
+        "src/core/lib/gpr/time_precise.h",
+        "src/core/lib/gpr/tmpfile.h",
     ],
     language = "c++",
     public_hdrs = GPR_PUBLIC_HDRS,
     deps = [
         "gpr_codegen",
-        "@com_google_absl//absl/container:inlined_vector",
     ],
 )
 
@@ -552,16 +544,49 @@ grpc_cc_library(
     ],
 )
 
+grpc_cc_library(
+    name = "gpr++_base",
+    language = "c++",
+    public_hdrs = [
+        "src/core/lib/gpr++/abstract.h",
+        "src/core/lib/gpr++/manual_constructor.h",
+        "src/core/lib/gpr++/memory.h",
+    ],
+)
+
+grpc_cc_library(
+    name = "atomic",
+    language = "c++",
+    public_hdrs = [
+        "src/core/lib/gpr++/atomic.h",
+    ],
+    hdrs = [
+        "src/core/lib/gpr++/atomic_with_atm.h",
+        "src/core/lib/gpr++/atomic_with_std.h",
+    ],
+    deps = [
+        "gpr",
+    ],
+)
+
+grpc_cc_library(
+    name = "inlined_vector",
+    language = "c++",
+    public_hdrs = [
+        "src/core/lib/gpr++/inlined_vector.h",
+    ],
+)
+
 grpc_cc_library(
     name = "debug_location",
     language = "c++",
-    public_hdrs = ["src/core/lib/support/debug_location.h"],
+    public_hdrs = ["src/core/lib/gpr++/debug_location.h"],
 )
 
 grpc_cc_library(
     name = "orphanable",
     language = "c++",
-    public_hdrs = ["src/core/lib/support/orphanable.h"],
+    public_hdrs = ["src/core/lib/gpr++/orphanable.h"],
     deps = [
         "debug_location",
         "grpc_trace",
@@ -571,7 +596,7 @@ grpc_cc_library(
 grpc_cc_library(
     name = "ref_counted",
     language = "c++",
-    public_hdrs = ["src/core/lib/support/ref_counted.h"],
+    public_hdrs = ["src/core/lib/gpr++/ref_counted.h"],
     deps = [
         "debug_location",
         "grpc_trace",
@@ -581,7 +606,7 @@ grpc_cc_library(
 grpc_cc_library(
     name = "ref_counted_ptr",
     language = "c++",
-    public_hdrs = ["src/core/lib/support/ref_counted_ptr.h"],
+    public_hdrs = ["src/core/lib/gpr++/ref_counted_ptr.h"],
 )
 
 grpc_cc_library(
@@ -848,6 +873,7 @@ grpc_cc_library(
     public_hdrs = GRPC_PUBLIC_HDRS,
     deps = [
         "gpr_base",
+        "gpr++_base",
         "grpc_codegen",
         "grpc_trace",
     ],
@@ -860,6 +886,7 @@ grpc_cc_library(
     ],
     language = "c++",
     deps = [
+        "atomic",
         "grpc_base_c",
     ],
 )
@@ -1320,6 +1347,7 @@ grpc_cc_library(
     ],
     language = "c++",
     deps = [
+        "gpr++_base",
         "grpc_base",
         "grpc_http_filters",
         "grpc_transport_chttp2_alpn",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 97d68cc62c7..4450a73e9d5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -544,6 +544,7 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_cxx http2_client)
 endif()
 add_dependencies(buildtests_cxx hybrid_end2end_test)
+add_dependencies(buildtests_cxx inlined_vector_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_cxx inproc_sync_unary_ping_pong_test)
 endif()
@@ -600,7 +601,6 @@ add_dependencies(buildtests_cxx stress_test)
 add_dependencies(buildtests_cxx thread_manager_test)
 add_dependencies(buildtests_cxx thread_stress_test)
 add_dependencies(buildtests_cxx transport_pid_controller_test)
-add_dependencies(buildtests_cxx vector_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_cxx writes_per_rpc_test)
 endif()
@@ -623,50 +623,50 @@ endif (gRPC_BUILD_TESTS)
 
 
 add_library(gpr
+  src/core/lib/gpr/alloc.cc
+  src/core/lib/gpr/arena.cc
+  src/core/lib/gpr/atm.cc
+  src/core/lib/gpr/avl.cc
+  src/core/lib/gpr/cmdline.cc
+  src/core/lib/gpr/cpu_iphone.cc
+  src/core/lib/gpr/cpu_linux.cc
+  src/core/lib/gpr/cpu_posix.cc
+  src/core/lib/gpr/cpu_windows.cc
+  src/core/lib/gpr/env_linux.cc
+  src/core/lib/gpr/env_posix.cc
+  src/core/lib/gpr/env_windows.cc
+  src/core/lib/gpr/fork.cc
+  src/core/lib/gpr/host_port.cc
+  src/core/lib/gpr/log.cc
+  src/core/lib/gpr/log_android.cc
+  src/core/lib/gpr/log_linux.cc
+  src/core/lib/gpr/log_posix.cc
+  src/core/lib/gpr/log_windows.cc
+  src/core/lib/gpr/mpscq.cc
+  src/core/lib/gpr/murmur_hash.cc
+  src/core/lib/gpr/string.cc
+  src/core/lib/gpr/string_posix.cc
+  src/core/lib/gpr/string_util_windows.cc
+  src/core/lib/gpr/string_windows.cc
+  src/core/lib/gpr/subprocess_posix.cc
+  src/core/lib/gpr/subprocess_windows.cc
+  src/core/lib/gpr/sync.cc
+  src/core/lib/gpr/sync_posix.cc
+  src/core/lib/gpr/sync_windows.cc
+  src/core/lib/gpr/thd.cc
+  src/core/lib/gpr/thd_posix.cc
+  src/core/lib/gpr/thd_windows.cc
+  src/core/lib/gpr/time.cc
+  src/core/lib/gpr/time_posix.cc
+  src/core/lib/gpr/time_precise.cc
+  src/core/lib/gpr/time_windows.cc
+  src/core/lib/gpr/tls_pthread.cc
+  src/core/lib/gpr/tmpfile_msys.cc
+  src/core/lib/gpr/tmpfile_posix.cc
+  src/core/lib/gpr/tmpfile_windows.cc
+  src/core/lib/gpr/wrap_memcpy.cc
   src/core/lib/profiling/basic_timers.cc
   src/core/lib/profiling/stap_timers.cc
-  src/core/lib/support/alloc.cc
-  src/core/lib/support/arena.cc
-  src/core/lib/support/atm.cc
-  src/core/lib/support/avl.cc
-  src/core/lib/support/cmdline.cc
-  src/core/lib/support/cpu_iphone.cc
-  src/core/lib/support/cpu_linux.cc
-  src/core/lib/support/cpu_posix.cc
-  src/core/lib/support/cpu_windows.cc
-  src/core/lib/support/env_linux.cc
-  src/core/lib/support/env_posix.cc
-  src/core/lib/support/env_windows.cc
-  src/core/lib/support/fork.cc
-  src/core/lib/support/host_port.cc
-  src/core/lib/support/log.cc
-  src/core/lib/support/log_android.cc
-  src/core/lib/support/log_linux.cc
-  src/core/lib/support/log_posix.cc
-  src/core/lib/support/log_windows.cc
-  src/core/lib/support/mpscq.cc
-  src/core/lib/support/murmur_hash.cc
-  src/core/lib/support/string.cc
-  src/core/lib/support/string_posix.cc
-  src/core/lib/support/string_util_windows.cc
-  src/core/lib/support/string_windows.cc
-  src/core/lib/support/subprocess_posix.cc
-  src/core/lib/support/subprocess_windows.cc
-  src/core/lib/support/sync.cc
-  src/core/lib/support/sync_posix.cc
-  src/core/lib/support/sync_windows.cc
-  src/core/lib/support/thd.cc
-  src/core/lib/support/thd_posix.cc
-  src/core/lib/support/thd_windows.cc
-  src/core/lib/support/time.cc
-  src/core/lib/support/time_posix.cc
-  src/core/lib/support/time_precise.cc
-  src/core/lib/support/time_windows.cc
-  src/core/lib/support/tls_pthread.cc
-  src/core/lib/support/tmpfile_msys.cc
-  src/core/lib/support/tmpfile_posix.cc
-  src/core/lib/support/tmpfile_windows.cc
-  src/core/lib/support/wrap_memcpy.cc
 )
 
 if(WIN32 AND MSVC)
@@ -4784,7 +4784,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(alloc_test
-  test/core/support/alloc_test.cc
+  test/core/gpr/alloc_test.cc
 )
 
 
@@ -4836,7 +4836,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(arena_test
-  test/core/support/arena_test.cc
+  test/core/gpr/arena_test.cc
 )
 
 
@@ -5635,7 +5635,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_avl_test
-  test/core/support/avl_test.cc
+  test/core/gpr/avl_test.cc
 )
 
 
@@ -5660,7 +5660,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_cmdline_test
-  test/core/support/cmdline_test.cc
+  test/core/gpr/cmdline_test.cc
 )
 
 
@@ -5685,7 +5685,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_cpu_test
-  test/core/support/cpu_test.cc
+  test/core/gpr/cpu_test.cc
 )
 
 
@@ -5710,7 +5710,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_env_test
-  test/core/support/env_test.cc
+  test/core/gpr/env_test.cc
 )
 
 
@@ -5735,7 +5735,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_host_port_test
-  test/core/support/host_port_test.cc
+  test/core/gpr/host_port_test.cc
 )
 
 
@@ -5760,7 +5760,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_log_test
-  test/core/support/log_test.cc
+  test/core/gpr/log_test.cc
 )
 
 
@@ -5785,7 +5785,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_manual_constructor_test
-  test/core/support/manual_constructor_test.cc
+  test/core/gpr++/manual_constructor_test.cc
 )
 
 
@@ -5810,7 +5810,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_mpscq_test
-  test/core/support/mpscq_test.cc
+  test/core/gpr/mpscq_test.cc
 )
 
 
@@ -5835,7 +5835,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_spinlock_test
-  test/core/support/spinlock_test.cc
+  test/core/gpr/spinlock_test.cc
 )
 
 
@@ -5860,7 +5860,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_string_test
-  test/core/support/string_test.cc
+  test/core/gpr/string_test.cc
 )
 
 
@@ -5885,7 +5885,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_sync_test
-  test/core/support/sync_test.cc
+  test/core/gpr/sync_test.cc
 )
 
 
@@ -5910,7 +5910,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_thd_test
-  test/core/support/thd_test.cc
+  test/core/gpr/thd_test.cc
 )
 
 
@@ -5935,7 +5935,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_time_test
-  test/core/support/time_test.cc
+  test/core/gpr/time_test.cc
 )
 
 
@@ -5960,7 +5960,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_tls_test
-  test/core/support/tls_test.cc
+  test/core/gpr/tls_test.cc
 )
 
 
@@ -5985,7 +5985,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(gpr_useful_test
-  test/core/support/useful_test.cc
+  test/core/gpr/useful_test.cc
 )
 
 
@@ -7202,7 +7202,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(murmur_hash_test
-  test/core/support/murmur_hash_test.cc
+  test/core/gpr/murmur_hash_test.cc
 )
 
 
@@ -10552,6 +10552,43 @@ target_link_libraries(hybrid_end2end_test
   ${_gRPC_GFLAGS_LIBRARIES}
 )
 
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
+add_executable(inlined_vector_test
+  test/core/gpr++/inlined_vector_test.cc
+  third_party/googletest/googletest/src/gtest-all.cc
+  third_party/googletest/googlemock/src/gmock-all.cc
+)
+
+
+target_include_directories(inlined_vector_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${_gRPC_SSL_INCLUDE_DIR}
+  PRIVATE ${_gRPC_PROTOBUF_INCLUDE_DIR}
+  PRIVATE ${_gRPC_ZLIB_INCLUDE_DIR}
+  PRIVATE ${_gRPC_BENCHMARK_INCLUDE_DIR}
+  PRIVATE ${_gRPC_CARES_INCLUDE_DIR}
+  PRIVATE ${_gRPC_GFLAGS_INCLUDE_DIR}
+  PRIVATE third_party/googletest/googletest/include
+  PRIVATE third_party/googletest/googletest
+  PRIVATE third_party/googletest/googlemock/include
+  PRIVATE third_party/googletest/googlemock
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(inlined_vector_test
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc_test_util
+  grpc++
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
@@ -10764,7 +10801,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(memory_test
-  test/core/support/memory_test.cc
+  test/core/gpr++/memory_test.cc
   third_party/googletest/googletest/src/gtest-all.cc
   third_party/googletest/googlemock/src/gmock-all.cc
 )
@@ -10915,7 +10952,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(orphanable_test
-  test/core/support/orphanable_test.cc
+  test/core/gpr++/orphanable_test.cc
   third_party/googletest/googletest/src/gtest-all.cc
   third_party/googletest/googlemock/src/gmock-all.cc
 )
@@ -11315,7 +11352,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(ref_counted_ptr_test
-  test/core/support/ref_counted_ptr_test.cc
+  test/core/gpr++/ref_counted_ptr_test.cc
   third_party/googletest/googletest/src/gtest-all.cc
   third_party/googletest/googlemock/src/gmock-all.cc
 )
@@ -11352,7 +11389,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(ref_counted_test
-  test/core/support/ref_counted_test.cc
+  test/core/gpr++/ref_counted_test.cc
   third_party/googletest/googletest/src/gtest-all.cc
   third_party/googletest/googlemock/src/gmock-all.cc
 )
@@ -12057,43 +12094,6 @@ target_link_libraries(transport_pid_controller_test
   ${_gRPC_GFLAGS_LIBRARIES}
 )
 
-endif (gRPC_BUILD_TESTS)
-if (gRPC_BUILD_TESTS)
-
-add_executable(vector_test
-  test/core/support/vector_test.cc
-  third_party/googletest/googletest/src/gtest-all.cc
-  third_party/googletest/googlemock/src/gmock-all.cc
-)
-
-
-target_include_directories(vector_test
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PRIVATE ${_gRPC_SSL_INCLUDE_DIR}
-  PRIVATE ${_gRPC_PROTOBUF_INCLUDE_DIR}
-  PRIVATE ${_gRPC_ZLIB_INCLUDE_DIR}
-  PRIVATE ${_gRPC_BENCHMARK_INCLUDE_DIR}
-  PRIVATE ${_gRPC_CARES_INCLUDE_DIR}
-  PRIVATE ${_gRPC_GFLAGS_INCLUDE_DIR}
-  PRIVATE third_party/googletest/googletest/include
-  PRIVATE third_party/googletest/googletest
-  PRIVATE third_party/googletest/googlemock/include
-  PRIVATE third_party/googletest/googlemock
-  PRIVATE ${_gRPC_PROTO_GENS_DIR}
-)
-
-target_link_libraries(vector_test
-  ${_gRPC_PROTOBUF_LIBRARIES}
-  ${_gRPC_ALLTARGETS_LIBRARIES}
-  grpc_test_util
-  grpc++
-  grpc
-  gpr_test_util
-  gpr
-  ${_gRPC_GFLAGS_LIBRARIES}
-)
-
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
diff --git a/Makefile b/Makefile
index 3265cea362e..69a68a6d66a 100644
--- a/Makefile
+++ b/Makefile
@@ -1151,6 +1151,7 @@ h2_ssl_cert_test: $(BINDIR)/$(CONFIG)/h2_ssl_cert_test
 health_service_end2end_test: $(BINDIR)/$(CONFIG)/health_service_end2end_test
 http2_client: $(BINDIR)/$(CONFIG)/http2_client
 hybrid_end2end_test: $(BINDIR)/$(CONFIG)/hybrid_end2end_test
+inlined_vector_test: $(BINDIR)/$(CONFIG)/inlined_vector_test
 inproc_sync_unary_ping_pong_test: $(BINDIR)/$(CONFIG)/inproc_sync_unary_ping_pong_test
 interop_client: $(BINDIR)/$(CONFIG)/interop_client
 interop_server: $(BINDIR)/$(CONFIG)/interop_server
@@ -1187,7 +1188,6 @@ stress_test: $(BINDIR)/$(CONFIG)/stress_test
 thread_manager_test: $(BINDIR)/$(CONFIG)/thread_manager_test
 thread_stress_test: $(BINDIR)/$(CONFIG)/thread_stress_test
 transport_pid_controller_test: $(BINDIR)/$(CONFIG)/transport_pid_controller_test
-vector_test: $(BINDIR)/$(CONFIG)/vector_test
 writes_per_rpc_test: $(BINDIR)/$(CONFIG)/writes_per_rpc_test
 public_headers_must_be_c89: $(BINDIR)/$(CONFIG)/public_headers_must_be_c89
 gen_hpack_tables: $(BINDIR)/$(CONFIG)/gen_hpack_tables
@@ -1594,6 +1594,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/health_service_end2end_test \
   $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
+  $(BINDIR)/$(CONFIG)/inlined_vector_test \
   $(BINDIR)/$(CONFIG)/inproc_sync_unary_ping_pong_test \
   $(BINDIR)/$(CONFIG)/interop_client \
   $(BINDIR)/$(CONFIG)/interop_server \
@@ -1630,7 +1631,6 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/thread_manager_test \
   $(BINDIR)/$(CONFIG)/thread_stress_test \
   $(BINDIR)/$(CONFIG)/transport_pid_controller_test \
-  $(BINDIR)/$(CONFIG)/vector_test \
   $(BINDIR)/$(CONFIG)/writes_per_rpc_test \
   $(BINDIR)/$(CONFIG)/boringssl_aes_test \
   $(BINDIR)/$(CONFIG)/boringssl_asn1_test \
@@ -1726,6 +1726,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/health_service_end2end_test \
   $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
+  $(BINDIR)/$(CONFIG)/inlined_vector_test \
   $(BINDIR)/$(CONFIG)/inproc_sync_unary_ping_pong_test \
   $(BINDIR)/$(CONFIG)/interop_client \
   $(BINDIR)/$(CONFIG)/interop_server \
@@ -1762,7 +1763,6 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/thread_manager_test \
   $(BINDIR)/$(CONFIG)/thread_stress_test \
   $(BINDIR)/$(CONFIG)/transport_pid_controller_test \
-  $(BINDIR)/$(CONFIG)/vector_test \
   $(BINDIR)/$(CONFIG)/writes_per_rpc_test \
   $(BINDIR)/$(CONFIG)/resolver_component_test_unsecure \
   $(BINDIR)/$(CONFIG)/resolver_component_test \
@@ -2135,6 +2135,8 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/h2_ssl_cert_test || ( echo test h2_ssl_cert_test failed ; exit 1 )
 	$(E) "[RUN]     Testing health_service_end2end_test"
 	$(Q) $(BINDIR)/$(CONFIG)/health_service_end2end_test || ( echo test health_service_end2end_test failed ; exit 1 )
+	$(E) "[RUN]     Testing inlined_vector_test"
+	$(Q) $(BINDIR)/$(CONFIG)/inlined_vector_test || ( echo test inlined_vector_test failed ; exit 1 )
 	$(E) "[RUN]     Testing inproc_sync_unary_ping_pong_test"
 	$(Q) $(BINDIR)/$(CONFIG)/inproc_sync_unary_ping_pong_test || ( echo test inproc_sync_unary_ping_pong_test failed ; exit 1 )
 	$(E) "[RUN]     Testing interop_test"
@@ -2185,8 +2187,6 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/thread_stress_test || ( echo test thread_stress_test failed ; exit 1 )
 	$(E) "[RUN]     Testing transport_pid_controller_test"
 	$(Q) $(BINDIR)/$(CONFIG)/transport_pid_controller_test || ( echo test transport_pid_controller_test failed ; exit 1 )
-	$(E) "[RUN]     Testing vector_test"
-	$(Q) $(BINDIR)/$(CONFIG)/vector_test || ( echo test vector_test failed ; exit 1 )
 	$(E) "[RUN]     Testing writes_per_rpc_test"
 	$(Q) $(BINDIR)/$(CONFIG)/writes_per_rpc_test || ( echo test writes_per_rpc_test failed ; exit 1 )
 	$(E) "[RUN]     Testing resolver_component_tests_runner_invoker_unsecure"
@@ -2840,50 +2840,50 @@ clean:
 
 
 LIBGPR_SRC = \
+    src/core/lib/gpr/alloc.cc \
+    src/core/lib/gpr/arena.cc \
+    src/core/lib/gpr/atm.cc \
+    src/core/lib/gpr/avl.cc \
+    src/core/lib/gpr/cmdline.cc \
+    src/core/lib/gpr/cpu_iphone.cc \
+    src/core/lib/gpr/cpu_linux.cc \
+    src/core/lib/gpr/cpu_posix.cc \
+    src/core/lib/gpr/cpu_windows.cc \
+    src/core/lib/gpr/env_linux.cc \
+    src/core/lib/gpr/env_posix.cc \
+    src/core/lib/gpr/env_windows.cc \
+    src/core/lib/gpr/fork.cc \
+    src/core/lib/gpr/host_port.cc \
+    src/core/lib/gpr/log.cc \
+    src/core/lib/gpr/log_android.cc \
+    src/core/lib/gpr/log_linux.cc \
+    src/core/lib/gpr/log_posix.cc \
+    src/core/lib/gpr/log_windows.cc \
+    src/core/lib/gpr/mpscq.cc \
+    src/core/lib/gpr/murmur_hash.cc \
+    src/core/lib/gpr/string.cc \
+    src/core/lib/gpr/string_posix.cc \
+    src/core/lib/gpr/string_util_windows.cc \
+    src/core/lib/gpr/string_windows.cc \
+    src/core/lib/gpr/subprocess_posix.cc \
+    src/core/lib/gpr/subprocess_windows.cc \
+    src/core/lib/gpr/sync.cc \
+    src/core/lib/gpr/sync_posix.cc \
+    src/core/lib/gpr/sync_windows.cc \
+    src/core/lib/gpr/thd.cc \
+    src/core/lib/gpr/thd_posix.cc \
+    src/core/lib/gpr/thd_windows.cc \
+    src/core/lib/gpr/time.cc \
+    src/core/lib/gpr/time_posix.cc \
+    src/core/lib/gpr/time_precise.cc \
+    src/core/lib/gpr/time_windows.cc \
+    src/core/lib/gpr/tls_pthread.cc \
+    src/core/lib/gpr/tmpfile_msys.cc \
+    src/core/lib/gpr/tmpfile_posix.cc \
+    src/core/lib/gpr/tmpfile_windows.cc \
+    src/core/lib/gpr/wrap_memcpy.cc \
     src/core/lib/profiling/basic_timers.cc \
     src/core/lib/profiling/stap_timers.cc \
-    src/core/lib/support/alloc.cc \
-    src/core/lib/support/arena.cc \
-    src/core/lib/support/atm.cc \
-    src/core/lib/support/avl.cc \
-    src/core/lib/support/cmdline.cc \
-    src/core/lib/support/cpu_iphone.cc \
-    src/core/lib/support/cpu_linux.cc \
-    src/core/lib/support/cpu_posix.cc \
-    src/core/lib/support/cpu_windows.cc \
-    src/core/lib/support/env_linux.cc \
-    src/core/lib/support/env_posix.cc \
-    src/core/lib/support/env_windows.cc \
-    src/core/lib/support/fork.cc \
-    src/core/lib/support/host_port.cc \
-    src/core/lib/support/log.cc \
-    src/core/lib/support/log_android.cc \
-    src/core/lib/support/log_linux.cc \
-    src/core/lib/support/log_posix.cc \
-    src/core/lib/support/log_windows.cc \
-    src/core/lib/support/mpscq.cc \
-    src/core/lib/support/murmur_hash.cc \
-    src/core/lib/support/string.cc \
-    src/core/lib/support/string_posix.cc \
-    src/core/lib/support/string_util_windows.cc \
-    src/core/lib/support/string_windows.cc \
-    src/core/lib/support/subprocess_posix.cc \
-    src/core/lib/support/subprocess_windows.cc \
-    src/core/lib/support/sync.cc \
-    src/core/lib/support/sync_posix.cc \
-    src/core/lib/support/sync_windows.cc \
-    src/core/lib/support/thd.cc \
-    src/core/lib/support/thd_posix.cc \
-    src/core/lib/support/thd_windows.cc \
-    src/core/lib/support/time.cc \
-    src/core/lib/support/time_posix.cc \
-    src/core/lib/support/time_precise.cc \
-    src/core/lib/support/time_windows.cc \
-    src/core/lib/support/tls_pthread.cc \
-    src/core/lib/support/tmpfile_msys.cc \
-    src/core/lib/support/tmpfile_posix.cc \
-    src/core/lib/support/tmpfile_windows.cc \
-    src/core/lib/support/wrap_memcpy.cc \
 
 PUBLIC_HEADERS_C += \
     include/grpc/support/alloc.h \
@@ -8798,7 +8798,7 @@ endif
 
 
 ALLOC_TEST_SRC = \
-    test/core/support/alloc_test.cc \
+    test/core/gpr/alloc_test.cc \
 
 ALLOC_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ALLOC_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -8818,7 +8818,7 @@ $(BINDIR)/$(CONFIG)/alloc_test: $(ALLOC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_te
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/alloc_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/alloc_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_alloc_test: $(ALLOC_TEST_OBJS:.o=.dep)
 
@@ -8894,7 +8894,7 @@ endif
 
 
 ARENA_TEST_SRC = \
-    test/core/support/arena_test.cc \
+    test/core/gpr/arena_test.cc \
 
 ARENA_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ARENA_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -8914,7 +8914,7 @@ $(BINDIR)/$(CONFIG)/arena_test: $(ARENA_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_te
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/arena_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/arena_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_arena_test: $(ARENA_TEST_OBJS:.o=.dep)
 
@@ -9857,7 +9857,7 @@ endif
 
 
 GPR_AVL_TEST_SRC = \
-    test/core/support/avl_test.cc \
+    test/core/gpr/avl_test.cc \
 
 GPR_AVL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_AVL_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -9877,7 +9877,7 @@ $(BINDIR)/$(CONFIG)/gpr_avl_test: $(GPR_AVL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgp
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/avl_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/avl_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_avl_test: $(GPR_AVL_TEST_OBJS:.o=.dep)
 
@@ -9889,7 +9889,7 @@ endif
 
 
 GPR_CMDLINE_TEST_SRC = \
-    test/core/support/cmdline_test.cc \
+    test/core/gpr/cmdline_test.cc \
 
 GPR_CMDLINE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_CMDLINE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -9909,7 +9909,7 @@ $(BINDIR)/$(CONFIG)/gpr_cmdline_test: $(GPR_CMDLINE_TEST_OBJS) $(LIBDIR)/$(CONFI
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/cmdline_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/cmdline_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_cmdline_test: $(GPR_CMDLINE_TEST_OBJS:.o=.dep)
 
@@ -9921,7 +9921,7 @@ endif
 
 
 GPR_CPU_TEST_SRC = \
-    test/core/support/cpu_test.cc \
+    test/core/gpr/cpu_test.cc \
 
 GPR_CPU_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_CPU_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -9941,7 +9941,7 @@ $(BINDIR)/$(CONFIG)/gpr_cpu_test: $(GPR_CPU_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgp
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/cpu_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/cpu_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_cpu_test: $(GPR_CPU_TEST_OBJS:.o=.dep)
 
@@ -9953,7 +9953,7 @@ endif
 
 
 GPR_ENV_TEST_SRC = \
-    test/core/support/env_test.cc \
+    test/core/gpr/env_test.cc \
 
 GPR_ENV_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_ENV_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -9973,7 +9973,7 @@ $(BINDIR)/$(CONFIG)/gpr_env_test: $(GPR_ENV_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgp
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/env_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/env_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_env_test: $(GPR_ENV_TEST_OBJS:.o=.dep)
 
@@ -9985,7 +9985,7 @@ endif
 
 
 GPR_HOST_PORT_TEST_SRC = \
-    test/core/support/host_port_test.cc \
+    test/core/gpr/host_port_test.cc \
 
 GPR_HOST_PORT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_HOST_PORT_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10005,7 +10005,7 @@ $(BINDIR)/$(CONFIG)/gpr_host_port_test: $(GPR_HOST_PORT_TEST_OBJS) $(LIBDIR)/$(C
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/host_port_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/host_port_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_host_port_test: $(GPR_HOST_PORT_TEST_OBJS:.o=.dep)
 
@@ -10017,7 +10017,7 @@ endif
 
 
 GPR_LOG_TEST_SRC = \
-    test/core/support/log_test.cc \
+    test/core/gpr/log_test.cc \
 
 GPR_LOG_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_LOG_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10037,7 +10037,7 @@ $(BINDIR)/$(CONFIG)/gpr_log_test: $(GPR_LOG_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgp
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/log_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/log_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_log_test: $(GPR_LOG_TEST_OBJS:.o=.dep)
 
@@ -10049,7 +10049,7 @@ endif
 
 
 GPR_MANUAL_CONSTRUCTOR_TEST_SRC = \
-    test/core/support/manual_constructor_test.cc \
+    test/core/gpr++/manual_constructor_test.cc \
 
 GPR_MANUAL_CONSTRUCTOR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_MANUAL_CONSTRUCTOR_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10069,7 +10069,7 @@ $(BINDIR)/$(CONFIG)/gpr_manual_constructor_test: $(GPR_MANUAL_CONSTRUCTOR_TEST_O
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/manual_constructor_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr++/manual_constructor_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_manual_constructor_test: $(GPR_MANUAL_CONSTRUCTOR_TEST_OBJS:.o=.dep)
 
@@ -10081,7 +10081,7 @@ endif
 
 
 GPR_MPSCQ_TEST_SRC = \
-    test/core/support/mpscq_test.cc \
+    test/core/gpr/mpscq_test.cc \
 
 GPR_MPSCQ_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_MPSCQ_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10101,7 +10101,7 @@ $(BINDIR)/$(CONFIG)/gpr_mpscq_test: $(GPR_MPSCQ_TEST_OBJS) $(LIBDIR)/$(CONFIG)/l
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/mpscq_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/mpscq_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_mpscq_test: $(GPR_MPSCQ_TEST_OBJS:.o=.dep)
 
@@ -10113,7 +10113,7 @@ endif
 
 
 GPR_SPINLOCK_TEST_SRC = \
-    test/core/support/spinlock_test.cc \
+    test/core/gpr/spinlock_test.cc \
 
 GPR_SPINLOCK_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_SPINLOCK_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10133,7 +10133,7 @@ $(BINDIR)/$(CONFIG)/gpr_spinlock_test: $(GPR_SPINLOCK_TEST_OBJS) $(LIBDIR)/$(CON
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/spinlock_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/spinlock_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_spinlock_test: $(GPR_SPINLOCK_TEST_OBJS:.o=.dep)
 
@@ -10145,7 +10145,7 @@ endif
 
 
 GPR_STRING_TEST_SRC = \
-    test/core/support/string_test.cc \
+    test/core/gpr/string_test.cc \
 
 GPR_STRING_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_STRING_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10165,7 +10165,7 @@ $(BINDIR)/$(CONFIG)/gpr_string_test: $(GPR_STRING_TEST_OBJS) $(LIBDIR)/$(CONFIG)
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/string_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/string_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_string_test: $(GPR_STRING_TEST_OBJS:.o=.dep)
 
@@ -10177,7 +10177,7 @@ endif
 
 
 GPR_SYNC_TEST_SRC = \
-    test/core/support/sync_test.cc \
+    test/core/gpr/sync_test.cc \
 
 GPR_SYNC_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_SYNC_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10197,7 +10197,7 @@ $(BINDIR)/$(CONFIG)/gpr_sync_test: $(GPR_SYNC_TEST_OBJS) $(LIBDIR)/$(CONFIG)/lib
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/sync_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/sync_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_sync_test: $(GPR_SYNC_TEST_OBJS:.o=.dep)
 
@@ -10209,7 +10209,7 @@ endif
 
 
 GPR_THD_TEST_SRC = \
-    test/core/support/thd_test.cc \
+    test/core/gpr/thd_test.cc \
 
 GPR_THD_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_THD_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10229,7 +10229,7 @@ $(BINDIR)/$(CONFIG)/gpr_thd_test: $(GPR_THD_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgp
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/thd_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/thd_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_thd_test: $(GPR_THD_TEST_OBJS:.o=.dep)
 
@@ -10241,7 +10241,7 @@ endif
 
 
 GPR_TIME_TEST_SRC = \
-    test/core/support/time_test.cc \
+    test/core/gpr/time_test.cc \
 
 GPR_TIME_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_TIME_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10261,7 +10261,7 @@ $(BINDIR)/$(CONFIG)/gpr_time_test: $(GPR_TIME_TEST_OBJS) $(LIBDIR)/$(CONFIG)/lib
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/time_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/time_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_time_test: $(GPR_TIME_TEST_OBJS:.o=.dep)
 
@@ -10273,7 +10273,7 @@ endif
 
 
 GPR_TLS_TEST_SRC = \
-    test/core/support/tls_test.cc \
+    test/core/gpr/tls_test.cc \
 
 GPR_TLS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_TLS_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10293,7 +10293,7 @@ $(BINDIR)/$(CONFIG)/gpr_tls_test: $(GPR_TLS_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgp
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/tls_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/tls_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_tls_test: $(GPR_TLS_TEST_OBJS:.o=.dep)
 
@@ -10305,7 +10305,7 @@ endif
 
 
 GPR_USEFUL_TEST_SRC = \
-    test/core/support/useful_test.cc \
+    test/core/gpr/useful_test.cc \
 
 GPR_USEFUL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GPR_USEFUL_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -10325,7 +10325,7 @@ $(BINDIR)/$(CONFIG)/gpr_useful_test: $(GPR_USEFUL_TEST_OBJS) $(LIBDIR)/$(CONFIG)
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/useful_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/useful_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_gpr_useful_test: $(GPR_USEFUL_TEST_OBJS:.o=.dep)
 
@@ -11879,7 +11879,7 @@ endif
 
 
 MURMUR_HASH_TEST_SRC = \
-    test/core/support/murmur_hash_test.cc \
+    test/core/gpr/murmur_hash_test.cc \
 
 MURMUR_HASH_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MURMUR_HASH_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -11899,7 +11899,7 @@ $(BINDIR)/$(CONFIG)/murmur_hash_test: $(MURMUR_HASH_TEST_OBJS) $(LIBDIR)/$(CONFI
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/murmur_hash_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr/murmur_hash_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_murmur_hash_test: $(MURMUR_HASH_TEST_OBJS:.o=.dep)
 
@@ -15778,6 +15778,49 @@ endif
 endif
 
 
+INLINED_VECTOR_TEST_SRC = \
+    test/core/gpr++/inlined_vector_test.cc \
+
+INLINED_VECTOR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(INLINED_VECTOR_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/inlined_vector_test: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/inlined_vector_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/inlined_vector_test: $(PROTOBUF_DEP) $(INLINED_VECTOR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(INLINED_VECTOR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/inlined_vector_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/gpr++/inlined_vector_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_inlined_vector_test: $(INLINED_VECTOR_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(INLINED_VECTOR_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 INPROC_SYNC_UNARY_PING_PONG_TEST_SRC = \
     test/cpp/qps/inproc_sync_unary_ping_pong_test.cc \
 
@@ -15970,7 +16013,7 @@ endif
 
 
 MEMORY_TEST_SRC = \
-    test/core/support/memory_test.cc \
+    test/core/gpr++/memory_test.cc \
 
 MEMORY_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MEMORY_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -16001,7 +16044,7 @@ endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/memory_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr++/memory_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_memory_test: $(MEMORY_TEST_OBJS:.o=.dep)
 
@@ -16147,7 +16190,7 @@ endif
 
 
 ORPHANABLE_TEST_SRC = \
-    test/core/support/orphanable_test.cc \
+    test/core/gpr++/orphanable_test.cc \
 
 ORPHANABLE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(ORPHANABLE_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -16178,7 +16221,7 @@ endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/orphanable_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr++/orphanable_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_orphanable_test: $(ORPHANABLE_TEST_OBJS:.o=.dep)
 
@@ -16554,7 +16597,7 @@ $(OBJDIR)/$(CONFIG)/test/cpp/interop/reconnect_interop_server.o: $(GENDIR)/src/p
 
 
 REF_COUNTED_PTR_TEST_SRC = \
-    test/core/support/ref_counted_ptr_test.cc \
+    test/core/gpr++/ref_counted_ptr_test.cc \
 
 REF_COUNTED_PTR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(REF_COUNTED_PTR_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -16585,7 +16628,7 @@ endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/ref_counted_ptr_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr++/ref_counted_ptr_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_ref_counted_ptr_test: $(REF_COUNTED_PTR_TEST_OBJS:.o=.dep)
 
@@ -16597,7 +16640,7 @@ endif
 
 
 REF_COUNTED_TEST_SRC = \
-    test/core/support/ref_counted_test.cc \
+    test/core/gpr++/ref_counted_test.cc \
 
 REF_COUNTED_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(REF_COUNTED_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -16628,7 +16671,7 @@ endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/support/ref_counted_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/gpr++/ref_counted_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_ref_counted_test: $(REF_COUNTED_TEST_OBJS:.o=.dep)
 
@@ -17366,49 +17409,6 @@ endif
 endif
 
 
-VECTOR_TEST_SRC = \
-    test/core/support/vector_test.cc \
-
-VECTOR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(VECTOR_TEST_SRC))))
-ifeq ($(NO_SECURE),true)
-
-# You can't build secure targets if you don't have OpenSSL.
-
-$(BINDIR)/$(CONFIG)/vector_test: openssl_dep_error
-
-else
-
-
-
-
-ifeq ($(NO_PROTOBUF),true)
-
-# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
-
-$(BINDIR)/$(CONFIG)/vector_test: protobuf_dep_error
-
-else
-
-$(BINDIR)/$(CONFIG)/vector_test: $(PROTOBUF_DEP) $(VECTOR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
-	$(E) "[LD]      Linking $@"
-	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(VECTOR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/vector_test
-
-endif
-
-endif
-
-$(OBJDIR)/$(CONFIG)/test/core/support/vector_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
-
-deps_vector_test: $(VECTOR_TEST_OBJS:.o=.dep)
-
-ifneq ($(NO_SECURE),true)
-ifneq ($(NO_DEPS),true)
--include $(VECTOR_TEST_OBJS:.o=.dep)
-endif
-endif
-
-
 WRITES_PER_RPC_TEST_SRC = \
     test/cpp/performance/writes_per_rpc_test.cc \
 
diff --git a/build.yaml b/build.yaml
index c9adc9b44e7..a8639a8b0b8 100644
--- a/build.yaml
+++ b/build.yaml
@@ -26,50 +26,50 @@ filegroups:
   - nanopb
 - name: gpr_base
   src:
+  - src/core/lib/gpr/alloc.cc
+  - src/core/lib/gpr/arena.cc
+  - src/core/lib/gpr/atm.cc
+  - src/core/lib/gpr/avl.cc
+  - src/core/lib/gpr/cmdline.cc
+  - src/core/lib/gpr/cpu_iphone.cc
+  - src/core/lib/gpr/cpu_linux.cc
+  - src/core/lib/gpr/cpu_posix.cc
+  - src/core/lib/gpr/cpu_windows.cc
+  - src/core/lib/gpr/env_linux.cc
+  - src/core/lib/gpr/env_posix.cc
+  - src/core/lib/gpr/env_windows.cc
+  - src/core/lib/gpr/fork.cc
+  - src/core/lib/gpr/host_port.cc
+  - src/core/lib/gpr/log.cc
+  - src/core/lib/gpr/log_android.cc
+  - src/core/lib/gpr/log_linux.cc
+  - src/core/lib/gpr/log_posix.cc
+  - src/core/lib/gpr/log_windows.cc
+  - src/core/lib/gpr/mpscq.cc
+  - src/core/lib/gpr/murmur_hash.cc
+  - src/core/lib/gpr/string.cc
+  - src/core/lib/gpr/string_posix.cc
+  - src/core/lib/gpr/string_util_windows.cc
+  - src/core/lib/gpr/string_windows.cc
+  - src/core/lib/gpr/subprocess_posix.cc
+  - src/core/lib/gpr/subprocess_windows.cc
+  - src/core/lib/gpr/sync.cc
+  - src/core/lib/gpr/sync_posix.cc
+  - src/core/lib/gpr/sync_windows.cc
+  - src/core/lib/gpr/thd.cc
+  - src/core/lib/gpr/thd_posix.cc
+  - src/core/lib/gpr/thd_windows.cc
+  - src/core/lib/gpr/time.cc
+  - src/core/lib/gpr/time_posix.cc
+  - src/core/lib/gpr/time_precise.cc
+  - src/core/lib/gpr/time_windows.cc
+  - src/core/lib/gpr/tls_pthread.cc
+  - src/core/lib/gpr/tmpfile_msys.cc
+  - src/core/lib/gpr/tmpfile_posix.cc
+  - src/core/lib/gpr/tmpfile_windows.cc
+  - src/core/lib/gpr/wrap_memcpy.cc
   - src/core/lib/profiling/basic_timers.cc
   - src/core/lib/profiling/stap_timers.cc
-  - src/core/lib/support/alloc.cc
-  - src/core/lib/support/arena.cc
-  - src/core/lib/support/atm.cc
-  - src/core/lib/support/avl.cc
-  - src/core/lib/support/cmdline.cc
-  - src/core/lib/support/cpu_iphone.cc
-  - src/core/lib/support/cpu_linux.cc
-  - src/core/lib/support/cpu_posix.cc
-  - src/core/lib/support/cpu_windows.cc
-  - src/core/lib/support/env_linux.cc
-  - src/core/lib/support/env_posix.cc
-  - src/core/lib/support/env_windows.cc
-  - src/core/lib/support/fork.cc
-  - src/core/lib/support/host_port.cc
-  - src/core/lib/support/log.cc
-  - src/core/lib/support/log_android.cc
-  - src/core/lib/support/log_linux.cc
-  - src/core/lib/support/log_posix.cc
-  - src/core/lib/support/log_windows.cc
-  - src/core/lib/support/mpscq.cc
-  - src/core/lib/support/murmur_hash.cc
-  - src/core/lib/support/string.cc
-  - src/core/lib/support/string_posix.cc
-  - src/core/lib/support/string_util_windows.cc
-  - src/core/lib/support/string_windows.cc
-  - src/core/lib/support/subprocess_posix.cc
-  - src/core/lib/support/subprocess_windows.cc
-  - src/core/lib/support/sync.cc
-  - src/core/lib/support/sync_posix.cc
-  - src/core/lib/support/sync_windows.cc
-  - src/core/lib/support/thd.cc
-  - src/core/lib/support/thd_posix.cc
-  - src/core/lib/support/thd_windows.cc
-  - src/core/lib/support/time.cc
-  - src/core/lib/support/time_posix.cc
-  - src/core/lib/support/time_precise.cc
-  - src/core/lib/support/time_windows.cc
-  - src/core/lib/support/tls_pthread.cc
-  - src/core/lib/support/tmpfile_msys.cc
-  - src/core/lib/support/tmpfile_posix.cc
-  - src/core/lib/support/tmpfile_windows.cc
-  - src/core/lib/support/wrap_memcpy.cc
   uses:
   - gpr_base_headers
 - name: gpr_base_headers
@@ -101,24 +101,24 @@ filegroups:
   - include/grpc/support/tls_pthread.h
   - include/grpc/support/useful.h
   headers:
+  - src/core/lib/gpr++/abstract.h
+  - src/core/lib/gpr++/atomic.h
+  - src/core/lib/gpr++/atomic_with_atm.h
+  - src/core/lib/gpr++/atomic_with_std.h
+  - src/core/lib/gpr++/manual_constructor.h
+  - src/core/lib/gpr++/memory.h
+  - src/core/lib/gpr/arena.h
+  - src/core/lib/gpr/env.h
+  - src/core/lib/gpr/fork.h
+  - src/core/lib/gpr/mpscq.h
+  - src/core/lib/gpr/murmur_hash.h
+  - src/core/lib/gpr/spinlock.h
+  - src/core/lib/gpr/string.h
+  - src/core/lib/gpr/string_windows.h
+  - src/core/lib/gpr/thd_internal.h
+  - src/core/lib/gpr/time_precise.h
+  - src/core/lib/gpr/tmpfile.h
   - src/core/lib/profiling/timers.h
-  - src/core/lib/support/abstract.h
-  - src/core/lib/support/arena.h
-  - src/core/lib/support/atomic.h
-  - src/core/lib/support/atomic_with_atm.h
-  - src/core/lib/support/atomic_with_std.h
-  - src/core/lib/support/env.h
-  - src/core/lib/support/fork.h
-  - src/core/lib/support/manual_constructor.h
-  - src/core/lib/support/memory.h
-  - src/core/lib/support/mpscq.h
-  - src/core/lib/support/murmur_hash.h
-  - src/core/lib/support/spinlock.h
-  - src/core/lib/support/string.h
-  - src/core/lib/support/string_windows.h
-  - src/core/lib/support/thd_internal.h
-  - src/core/lib/support/time_precise.h
-  - src/core/lib/support/tmpfile.h
   uses:
   - gpr_codegen
 - name: gpr_codegen
@@ -321,6 +321,11 @@ filegroups:
   - src/core/lib/compression/stream_compression_identity.h
   - src/core/lib/debug/stats.h
   - src/core/lib/debug/stats_data.h
+  - src/core/lib/gpr++/debug_location.h
+  - src/core/lib/gpr++/inlined_vector.h
+  - src/core/lib/gpr++/orphanable.h
+  - src/core/lib/gpr++/ref_counted.h
+  - src/core/lib/gpr++/ref_counted_ptr.h
   - src/core/lib/http/format_request.h
   - src/core/lib/http/httpcli.h
   - src/core/lib/http/parser.h
@@ -396,11 +401,6 @@ filegroups:
   - src/core/lib/slice/slice_hash_table.h
   - src/core/lib/slice/slice_internal.h
   - src/core/lib/slice/slice_string_helpers.h
-  - src/core/lib/support/debug_location.h
-  - src/core/lib/support/orphanable.h
-  - src/core/lib/support/ref_counted.h
-  - src/core/lib/support/ref_counted_ptr.h
-  - src/core/lib/support/vector.h
   - src/core/lib/surface/alarm_internal.h
   - src/core/lib/surface/api_trace.h
   - src/core/lib/surface/call.h
@@ -1732,7 +1732,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/alloc_test.cc
+  - test/core/gpr/alloc_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -1765,7 +1765,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/arena_test.cc
+  - test/core/gpr/arena_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2132,7 +2132,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/avl_test.cc
+  - test/core/gpr/avl_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2141,7 +2141,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/cmdline_test.cc
+  - test/core/gpr/cmdline_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2151,7 +2151,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/cpu_test.cc
+  - test/core/gpr/cpu_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2160,7 +2160,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/env_test.cc
+  - test/core/gpr/env_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2169,7 +2169,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/host_port_test.cc
+  - test/core/gpr/host_port_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2178,7 +2178,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/log_test.cc
+  - test/core/gpr/log_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2188,7 +2188,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/manual_constructor_test.cc
+  - test/core/gpr++/manual_constructor_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2198,7 +2198,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/mpscq_test.cc
+  - test/core/gpr/mpscq_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2208,7 +2208,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/spinlock_test.cc
+  - test/core/gpr/spinlock_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2217,7 +2217,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/string_test.cc
+  - test/core/gpr/string_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2227,7 +2227,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/sync_test.cc
+  - test/core/gpr/sync_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2237,7 +2237,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/thd_test.cc
+  - test/core/gpr/thd_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2246,7 +2246,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/time_test.cc
+  - test/core/gpr/time_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2255,7 +2255,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/tls_test.cc
+  - test/core/gpr/tls_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2264,7 +2264,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/useful_test.cc
+  - test/core/gpr/useful_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -2833,7 +2833,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/support/murmur_hash_test.cc
+  - test/core/gpr/murmur_hash_test.cc
   deps:
   - gpr_test_util
   - gpr
@@ -4260,6 +4260,20 @@ targets:
   - grpc
   - gpr_test_util
   - gpr
+- name: inlined_vector_test
+  gtest: true
+  build: test
+  language: c++
+  src:
+  - test/core/gpr++/inlined_vector_test.cc
+  deps:
+  - grpc_test_util
+  - grpc++
+  - grpc
+  - gpr_test_util
+  - gpr
+  uses:
+  - grpc++_test
 - name: inproc_sync_unary_ping_pong_test
   build: test
   language: c++
@@ -4357,7 +4371,7 @@ targets:
   build: test
   language: c++
   src:
-  - test/core/support/memory_test.cc
+  - test/core/gpr++/memory_test.cc
   deps:
   - grpc_test_util
   - grpc++
@@ -4409,7 +4423,7 @@ targets:
   build: test
   language: c++
   src:
-  - test/core/support/orphanable_test.cc
+  - test/core/gpr++/orphanable_test.cc
   deps:
   - grpc_test_util
   - grpc++
@@ -4562,7 +4576,7 @@ targets:
   build: test
   language: c++
   src:
-  - test/core/support/ref_counted_ptr_test.cc
+  - test/core/gpr++/ref_counted_ptr_test.cc
   deps:
   - grpc_test_util
   - grpc++
@@ -4576,7 +4590,7 @@ targets:
   build: test
   language: c++
   src:
-  - test/core/support/ref_counted_test.cc
+  - test/core/gpr++/ref_counted_test.cc
   deps:
   - grpc_test_util
   - grpc++
@@ -4826,20 +4840,6 @@ targets:
   - grpc
   - gpr_test_util
   - gpr
-- name: vector_test
-  gtest: true
-  build: test
-  language: c++
-  src:
-  - test/core/support/vector_test.cc
-  deps:
-  - grpc_test_util
-  - grpc++
-  - grpc
-  - gpr_test_util
-  - gpr
-  uses:
-  - grpc++_test
 - name: writes_per_rpc_test
   gtest: true
   cpu_cost: 0.5
diff --git a/config.m4 b/config.m4
index c026b83f359..54e29cc41de 100644
--- a/config.m4
+++ b/config.m4
@@ -39,50 +39,50 @@ if test "$PHP_GRPC" != "no"; then
     src/php/ext/grpc/server.c \
     src/php/ext/grpc/server_credentials.c \
     src/php/ext/grpc/timeval.c \
+    src/core/lib/gpr/alloc.cc \
+    src/core/lib/gpr/arena.cc \
+    src/core/lib/gpr/atm.cc \
+    src/core/lib/gpr/avl.cc \
+    src/core/lib/gpr/cmdline.cc \
+    src/core/lib/gpr/cpu_iphone.cc \
+    src/core/lib/gpr/cpu_linux.cc \
+    src/core/lib/gpr/cpu_posix.cc \
+    src/core/lib/gpr/cpu_windows.cc \
+    src/core/lib/gpr/env_linux.cc \
+    src/core/lib/gpr/env_posix.cc \
+    src/core/lib/gpr/env_windows.cc \
+    src/core/lib/gpr/fork.cc \
+    src/core/lib/gpr/host_port.cc \
+    src/core/lib/gpr/log.cc \
+    src/core/lib/gpr/log_android.cc \
+    src/core/lib/gpr/log_linux.cc \
+    src/core/lib/gpr/log_posix.cc \
+    src/core/lib/gpr/log_windows.cc \
+    src/core/lib/gpr/mpscq.cc \
+    src/core/lib/gpr/murmur_hash.cc \
+    src/core/lib/gpr/string.cc \
+    src/core/lib/gpr/string_posix.cc \
+    src/core/lib/gpr/string_util_windows.cc \
+    src/core/lib/gpr/string_windows.cc \
+    src/core/lib/gpr/subprocess_posix.cc \
+    src/core/lib/gpr/subprocess_windows.cc \
+    src/core/lib/gpr/sync.cc \
+    src/core/lib/gpr/sync_posix.cc \
+    src/core/lib/gpr/sync_windows.cc \
+    src/core/lib/gpr/thd.cc \
+    src/core/lib/gpr/thd_posix.cc \
+    src/core/lib/gpr/thd_windows.cc \
+    src/core/lib/gpr/time.cc \
+    src/core/lib/gpr/time_posix.cc \
+    src/core/lib/gpr/time_precise.cc \
+    src/core/lib/gpr/time_windows.cc \
+    src/core/lib/gpr/tls_pthread.cc \
+    src/core/lib/gpr/tmpfile_msys.cc \
+    src/core/lib/gpr/tmpfile_posix.cc \
+    src/core/lib/gpr/tmpfile_windows.cc \
+    src/core/lib/gpr/wrap_memcpy.cc \
     src/core/lib/profiling/basic_timers.cc \
     src/core/lib/profiling/stap_timers.cc \
-    src/core/lib/support/alloc.cc \
-    src/core/lib/support/arena.cc \
-    src/core/lib/support/atm.cc \
-    src/core/lib/support/avl.cc \
-    src/core/lib/support/cmdline.cc \
-    src/core/lib/support/cpu_iphone.cc \
-    src/core/lib/support/cpu_linux.cc \
-    src/core/lib/support/cpu_posix.cc \
-    src/core/lib/support/cpu_windows.cc \
-    src/core/lib/support/env_linux.cc \
-    src/core/lib/support/env_posix.cc \
-    src/core/lib/support/env_windows.cc \
-    src/core/lib/support/fork.cc \
-    src/core/lib/support/host_port.cc \
-    src/core/lib/support/log.cc \
-    src/core/lib/support/log_android.cc \
-    src/core/lib/support/log_linux.cc \
-    src/core/lib/support/log_posix.cc \
-    src/core/lib/support/log_windows.cc \
-    src/core/lib/support/mpscq.cc \
-    src/core/lib/support/murmur_hash.cc \
-    src/core/lib/support/string.cc \
-    src/core/lib/support/string_posix.cc \
-    src/core/lib/support/string_util_windows.cc \
-    src/core/lib/support/string_windows.cc \
-    src/core/lib/support/subprocess_posix.cc \
-    src/core/lib/support/subprocess_windows.cc \
-    src/core/lib/support/sync.cc \
-    src/core/lib/support/sync_posix.cc \
-    src/core/lib/support/sync_windows.cc \
-    src/core/lib/support/thd.cc \
-    src/core/lib/support/thd_posix.cc \
-    src/core/lib/support/thd_windows.cc \
-    src/core/lib/support/time.cc \
-    src/core/lib/support/time_posix.cc \
-    src/core/lib/support/time_precise.cc \
-    src/core/lib/support/time_windows.cc \
-    src/core/lib/support/tls_pthread.cc \
-    src/core/lib/support/tmpfile_msys.cc \
-    src/core/lib/support/tmpfile_posix.cc \
-    src/core/lib/support/tmpfile_windows.cc \
-    src/core/lib/support/wrap_memcpy.cc \
     src/core/lib/surface/init.cc \
     src/core/lib/backoff/backoff.cc \
     src/core/lib/channel/channel_args.cc \
@@ -678,6 +678,7 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/channel)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/compression)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/debug)
+  PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/gpr)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/http)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/iomgr)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/json)
@@ -695,7 +696,6 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/security/transport)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/security/util)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/slice)
-  PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/support)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/surface)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/transport)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/plugin_registry)
diff --git a/config.w32 b/config.w32
index cd3a16a4653..c8003140d80 100644
--- a/config.w32
+++ b/config.w32
@@ -16,50 +16,50 @@ if (PHP_GRPC != "no") {
     "src\\php\\ext\\grpc\\server.c " +
     "src\\php\\ext\\grpc\\server_credentials.c " +
     "src\\php\\ext\\grpc\\timeval.c " +
+    "src\\core\\lib\\gpr\\alloc.cc " +
+    "src\\core\\lib\\gpr\\arena.cc " +
+    "src\\core\\lib\\gpr\\atm.cc " +
+    "src\\core\\lib\\gpr\\avl.cc " +
+    "src\\core\\lib\\gpr\\cmdline.cc " +
+    "src\\core\\lib\\gpr\\cpu_iphone.cc " +
+    "src\\core\\lib\\gpr\\cpu_linux.cc " +
+    "src\\core\\lib\\gpr\\cpu_posix.cc " +
+    "src\\core\\lib\\gpr\\cpu_windows.cc " +
+    "src\\core\\lib\\gpr\\env_linux.cc " +
+    "src\\core\\lib\\gpr\\env_posix.cc " +
+    "src\\core\\lib\\gpr\\env_windows.cc " +
+    "src\\core\\lib\\gpr\\fork.cc " +
+    "src\\core\\lib\\gpr\\host_port.cc " +
+    "src\\core\\lib\\gpr\\log.cc " +
+    "src\\core\\lib\\gpr\\log_android.cc " +
+    "src\\core\\lib\\gpr\\log_linux.cc " +
+    "src\\core\\lib\\gpr\\log_posix.cc " +
+    "src\\core\\lib\\gpr\\log_windows.cc " +
+    "src\\core\\lib\\gpr\\mpscq.cc " +
+    "src\\core\\lib\\gpr\\murmur_hash.cc " +
+    "src\\core\\lib\\gpr\\string.cc " +
+    "src\\core\\lib\\gpr\\string_posix.cc " +
+    "src\\core\\lib\\gpr\\string_util_windows.cc " +
+    "src\\core\\lib\\gpr\\string_windows.cc " +
+    "src\\core\\lib\\gpr\\subprocess_posix.cc " +
+    "src\\core\\lib\\gpr\\subprocess_windows.cc " +
+    "src\\core\\lib\\gpr\\sync.cc " +
+    "src\\core\\lib\\gpr\\sync_posix.cc " +
+    "src\\core\\lib\\gpr\\sync_windows.cc " +
+    "src\\core\\lib\\gpr\\thd.cc " +
+    "src\\core\\lib\\gpr\\thd_posix.cc " +
+    "src\\core\\lib\\gpr\\thd_windows.cc " +
+    "src\\core\\lib\\gpr\\time.cc " +
+    "src\\core\\lib\\gpr\\time_posix.cc " +
+    "src\\core\\lib\\gpr\\time_precise.cc " +
+    "src\\core\\lib\\gpr\\time_windows.cc " +
+    "src\\core\\lib\\gpr\\tls_pthread.cc " +
+    "src\\core\\lib\\gpr\\tmpfile_msys.cc " +
+    "src\\core\\lib\\gpr\\tmpfile_posix.cc " +
+    "src\\core\\lib\\gpr\\tmpfile_windows.cc " +
+    "src\\core\\lib\\gpr\\wrap_memcpy.cc " +
     "src\\core\\lib\\profiling\\basic_timers.cc " +
     "src\\core\\lib\\profiling\\stap_timers.cc " +
-    "src\\core\\lib\\support\\alloc.cc " +
-    "src\\core\\lib\\support\\arena.cc " +
-    "src\\core\\lib\\support\\atm.cc " +
-    "src\\core\\lib\\support\\avl.cc " +
-    "src\\core\\lib\\support\\cmdline.cc " +
-    "src\\core\\lib\\support\\cpu_iphone.cc " +
-    "src\\core\\lib\\support\\cpu_linux.cc " +
-    "src\\core\\lib\\support\\cpu_posix.cc " +
-    "src\\core\\lib\\support\\cpu_windows.cc " +
-    "src\\core\\lib\\support\\env_linux.cc " +
-    "src\\core\\lib\\support\\env_posix.cc " +
-    "src\\core\\lib\\support\\env_windows.cc " +
-    "src\\core\\lib\\support\\fork.cc " +
-    "src\\core\\lib\\support\\host_port.cc " +
-    "src\\core\\lib\\support\\log.cc " +
-    "src\\core\\lib\\support\\log_android.cc " +
-    "src\\core\\lib\\support\\log_linux.cc " +
-    "src\\core\\lib\\support\\log_posix.cc " +
-    "src\\core\\lib\\support\\log_windows.cc " +
-    "src\\core\\lib\\support\\mpscq.cc " +
-    "src\\core\\lib\\support\\murmur_hash.cc " +
-    "src\\core\\lib\\support\\string.cc " +
-    "src\\core\\lib\\support\\string_posix.cc " +
-    "src\\core\\lib\\support\\string_util_windows.cc " +
-    "src\\core\\lib\\support\\string_windows.cc " +
-    "src\\core\\lib\\support\\subprocess_posix.cc " +
-    "src\\core\\lib\\support\\subprocess_windows.cc " +
-    "src\\core\\lib\\support\\sync.cc " +
-    "src\\core\\lib\\support\\sync_posix.cc " +
-    "src\\core\\lib\\support\\sync_windows.cc " +
-    "src\\core\\lib\\support\\thd.cc " +
-    "src\\core\\lib\\support\\thd_posix.cc " +
-    "src\\core\\lib\\support\\thd_windows.cc " +
-    "src\\core\\lib\\support\\time.cc " +
-    "src\\core\\lib\\support\\time_posix.cc " +
-    "src\\core\\lib\\support\\time_precise.cc " +
-    "src\\core\\lib\\support\\time_windows.cc " +
-    "src\\core\\lib\\support\\tls_pthread.cc " +
-    "src\\core\\lib\\support\\tmpfile_msys.cc " +
-    "src\\core\\lib\\support\\tmpfile_posix.cc " +
-    "src\\core\\lib\\support\\tmpfile_windows.cc " +
-    "src\\core\\lib\\support\\wrap_memcpy.cc " +
     "src\\core\\lib\\surface\\init.cc " +
     "src\\core\\lib\\backoff\\backoff.cc " +
     "src\\core\\lib\\channel\\channel_args.cc " +
@@ -690,6 +690,7 @@ if (PHP_GRPC != "no") {
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\channel");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\compression");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\debug");
+  FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\gpr");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\http");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\iomgr");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\json");
@@ -708,7 +709,6 @@ if (PHP_GRPC != "no") {
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\security\\transport");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\security\\util");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\slice");
-  FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\support");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\surface");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\transport");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\plugin_registry");
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index df5a4112a75..ccaa21194b8 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -84,7 +84,7 @@ Pod::Spec.new do |s|
     'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
     'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
     # If we don't set these two settings, `include/grpc/support/time.h` and
-    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # `src/core/lib/gpr/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
     # build.
     'USE_HEADERMAP' => 'NO',
     'ALWAYS_SEARCH_USER_PATHS' => 'NO',
@@ -192,68 +192,68 @@ Pod::Spec.new do |s|
     ss.dependency 'nanopb', '~> 0.3'
 
     # To save you from scrolling, this is the last part of the podspec.
-    ss.source_files = 'src/core/lib/profiling/timers.h',
-                      'src/core/lib/support/abstract.h',
-                      'src/core/lib/support/arena.h',
-                      'src/core/lib/support/atomic.h',
-                      'src/core/lib/support/atomic_with_atm.h',
-                      'src/core/lib/support/atomic_with_std.h',
-                      'src/core/lib/support/env.h',
-                      'src/core/lib/support/fork.h',
-                      'src/core/lib/support/manual_constructor.h',
-                      'src/core/lib/support/memory.h',
-                      'src/core/lib/support/mpscq.h',
-                      'src/core/lib/support/murmur_hash.h',
-                      'src/core/lib/support/spinlock.h',
-                      'src/core/lib/support/string.h',
-                      'src/core/lib/support/string_windows.h',
-                      'src/core/lib/support/thd_internal.h',
-                      'src/core/lib/support/time_precise.h',
-                      'src/core/lib/support/tmpfile.h',
+    ss.source_files = 'src/core/lib/gpr++/abstract.h',
+                      'src/core/lib/gpr++/atomic.h',
+                      'src/core/lib/gpr++/atomic_with_atm.h',
+                      'src/core/lib/gpr++/atomic_with_std.h',
+                      'src/core/lib/gpr++/manual_constructor.h',
+                      'src/core/lib/gpr++/memory.h',
+                      'src/core/lib/gpr/arena.h',
+                      'src/core/lib/gpr/env.h',
+                      'src/core/lib/gpr/fork.h',
+                      'src/core/lib/gpr/mpscq.h',
+                      'src/core/lib/gpr/murmur_hash.h',
+                      'src/core/lib/gpr/spinlock.h',
+                      'src/core/lib/gpr/string.h',
+                      'src/core/lib/gpr/string_windows.h',
+                      'src/core/lib/gpr/thd_internal.h',
+                      'src/core/lib/gpr/time_precise.h',
+                      'src/core/lib/gpr/tmpfile.h',
+                      'src/core/lib/profiling/timers.h',
+                      'src/core/lib/gpr/alloc.cc',
+                      'src/core/lib/gpr/arena.cc',
+                      'src/core/lib/gpr/atm.cc',
+                      'src/core/lib/gpr/avl.cc',
+                      'src/core/lib/gpr/cmdline.cc',
+                      'src/core/lib/gpr/cpu_iphone.cc',
+                      'src/core/lib/gpr/cpu_linux.cc',
+                      'src/core/lib/gpr/cpu_posix.cc',
+                      'src/core/lib/gpr/cpu_windows.cc',
+                      'src/core/lib/gpr/env_linux.cc',
+                      'src/core/lib/gpr/env_posix.cc',
+                      'src/core/lib/gpr/env_windows.cc',
+                      'src/core/lib/gpr/fork.cc',
+                      'src/core/lib/gpr/host_port.cc',
+                      'src/core/lib/gpr/log.cc',
+                      'src/core/lib/gpr/log_android.cc',
+                      'src/core/lib/gpr/log_linux.cc',
+                      'src/core/lib/gpr/log_posix.cc',
+                      'src/core/lib/gpr/log_windows.cc',
+                      'src/core/lib/gpr/mpscq.cc',
+                      'src/core/lib/gpr/murmur_hash.cc',
+                      'src/core/lib/gpr/string.cc',
+                      'src/core/lib/gpr/string_posix.cc',
+                      'src/core/lib/gpr/string_util_windows.cc',
+                      'src/core/lib/gpr/string_windows.cc',
+                      'src/core/lib/gpr/subprocess_posix.cc',
+                      'src/core/lib/gpr/subprocess_windows.cc',
+                      'src/core/lib/gpr/sync.cc',
+                      'src/core/lib/gpr/sync_posix.cc',
+                      'src/core/lib/gpr/sync_windows.cc',
+                      'src/core/lib/gpr/thd.cc',
+                      'src/core/lib/gpr/thd_posix.cc',
+                      'src/core/lib/gpr/thd_windows.cc',
+                      'src/core/lib/gpr/time.cc',
+                      'src/core/lib/gpr/time_posix.cc',
+                      'src/core/lib/gpr/time_precise.cc',
+                      'src/core/lib/gpr/time_windows.cc',
+                      'src/core/lib/gpr/tls_pthread.cc',
+                      'src/core/lib/gpr/tmpfile_msys.cc',
+                      'src/core/lib/gpr/tmpfile_posix.cc',
+                      'src/core/lib/gpr/tmpfile_windows.cc',
+                      'src/core/lib/gpr/wrap_memcpy.cc',
                       'src/core/lib/profiling/basic_timers.cc',
                       'src/core/lib/profiling/stap_timers.cc',
-                      'src/core/lib/support/alloc.cc',
-                      'src/core/lib/support/arena.cc',
-                      'src/core/lib/support/atm.cc',
-                      'src/core/lib/support/avl.cc',
-                      'src/core/lib/support/cmdline.cc',
-                      'src/core/lib/support/cpu_iphone.cc',
-                      'src/core/lib/support/cpu_linux.cc',
-                      'src/core/lib/support/cpu_posix.cc',
-                      'src/core/lib/support/cpu_windows.cc',
-                      'src/core/lib/support/env_linux.cc',
-                      'src/core/lib/support/env_posix.cc',
-                      'src/core/lib/support/env_windows.cc',
-                      'src/core/lib/support/fork.cc',
-                      'src/core/lib/support/host_port.cc',
-                      'src/core/lib/support/log.cc',
-                      'src/core/lib/support/log_android.cc',
-                      'src/core/lib/support/log_linux.cc',
-                      'src/core/lib/support/log_posix.cc',
-                      'src/core/lib/support/log_windows.cc',
-                      'src/core/lib/support/mpscq.cc',
-                      'src/core/lib/support/murmur_hash.cc',
-                      'src/core/lib/support/string.cc',
-                      'src/core/lib/support/string_posix.cc',
-                      'src/core/lib/support/string_util_windows.cc',
-                      'src/core/lib/support/string_windows.cc',
-                      'src/core/lib/support/subprocess_posix.cc',
-                      'src/core/lib/support/subprocess_windows.cc',
-                      'src/core/lib/support/sync.cc',
-                      'src/core/lib/support/sync_posix.cc',
-                      'src/core/lib/support/sync_windows.cc',
-                      'src/core/lib/support/thd.cc',
-                      'src/core/lib/support/thd_posix.cc',
-                      'src/core/lib/support/thd_windows.cc',
-                      'src/core/lib/support/time.cc',
-                      'src/core/lib/support/time_posix.cc',
-                      'src/core/lib/support/time_precise.cc',
-                      'src/core/lib/support/time_windows.cc',
-                      'src/core/lib/support/tls_pthread.cc',
-                      'src/core/lib/support/tmpfile_msys.cc',
-                      'src/core/lib/support/tmpfile_posix.cc',
-                      'src/core/lib/support/tmpfile_windows.cc',
-                      'src/core/lib/support/wrap_memcpy.cc',
                       'src/core/ext/transport/chttp2/transport/bin_decoder.h',
                       'src/core/ext/transport/chttp2/transport/bin_encoder.h',
                       'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
@@ -344,6 +344,11 @@ Pod::Spec.new do |s|
                       'src/core/lib/compression/stream_compression_identity.h',
                       'src/core/lib/debug/stats.h',
                       'src/core/lib/debug/stats_data.h',
+                      'src/core/lib/gpr++/debug_location.h',
+                      'src/core/lib/gpr++/inlined_vector.h',
+                      'src/core/lib/gpr++/orphanable.h',
+                      'src/core/lib/gpr++/ref_counted.h',
+                      'src/core/lib/gpr++/ref_counted_ptr.h',
                       'src/core/lib/http/format_request.h',
                       'src/core/lib/http/httpcli.h',
                       'src/core/lib/http/parser.h',
@@ -419,11 +424,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/slice/slice_hash_table.h',
                       'src/core/lib/slice/slice_internal.h',
                       'src/core/lib/slice/slice_string_helpers.h',
-                      'src/core/lib/support/debug_location.h',
-                      'src/core/lib/support/orphanable.h',
-                      'src/core/lib/support/ref_counted.h',
-                      'src/core/lib/support/ref_counted_ptr.h',
-                      'src/core/lib/support/vector.h',
                       'src/core/lib/surface/alarm_internal.h',
                       'src/core/lib/surface/api_trace.h',
                       'src/core/lib/surface/call.h',
@@ -718,24 +718,24 @@ Pod::Spec.new do |s|
                       'src/core/ext/filters/workarounds/workaround_utils.cc',
                       'src/core/plugin_registry/grpc_plugin_registry.cc'
 
-    ss.private_header_files = 'src/core/lib/profiling/timers.h',
-                              'src/core/lib/support/abstract.h',
-                              'src/core/lib/support/arena.h',
-                              'src/core/lib/support/atomic.h',
-                              'src/core/lib/support/atomic_with_atm.h',
-                              'src/core/lib/support/atomic_with_std.h',
-                              'src/core/lib/support/env.h',
-                              'src/core/lib/support/fork.h',
-                              'src/core/lib/support/manual_constructor.h',
-                              'src/core/lib/support/memory.h',
-                              'src/core/lib/support/mpscq.h',
-                              'src/core/lib/support/murmur_hash.h',
-                              'src/core/lib/support/spinlock.h',
-                              'src/core/lib/support/string.h',
-                              'src/core/lib/support/string_windows.h',
-                              'src/core/lib/support/thd_internal.h',
-                              'src/core/lib/support/time_precise.h',
-                              'src/core/lib/support/tmpfile.h',
+    ss.private_header_files = 'src/core/lib/gpr++/abstract.h',
+                              'src/core/lib/gpr++/atomic.h',
+                              'src/core/lib/gpr++/atomic_with_atm.h',
+                              'src/core/lib/gpr++/atomic_with_std.h',
+                              'src/core/lib/gpr++/manual_constructor.h',
+                              'src/core/lib/gpr++/memory.h',
+                              'src/core/lib/gpr/arena.h',
+                              'src/core/lib/gpr/env.h',
+                              'src/core/lib/gpr/fork.h',
+                              'src/core/lib/gpr/mpscq.h',
+                              'src/core/lib/gpr/murmur_hash.h',
+                              'src/core/lib/gpr/spinlock.h',
+                              'src/core/lib/gpr/string.h',
+                              'src/core/lib/gpr/string_windows.h',
+                              'src/core/lib/gpr/thd_internal.h',
+                              'src/core/lib/gpr/time_precise.h',
+                              'src/core/lib/gpr/tmpfile.h',
+                              'src/core/lib/profiling/timers.h',
                               'src/core/ext/transport/chttp2/transport/bin_decoder.h',
                               'src/core/ext/transport/chttp2/transport/bin_encoder.h',
                               'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
@@ -826,6 +826,11 @@ Pod::Spec.new do |s|
                               'src/core/lib/compression/stream_compression_identity.h',
                               'src/core/lib/debug/stats.h',
                               'src/core/lib/debug/stats_data.h',
+                              'src/core/lib/gpr++/debug_location.h',
+                              'src/core/lib/gpr++/inlined_vector.h',
+                              'src/core/lib/gpr++/orphanable.h',
+                              'src/core/lib/gpr++/ref_counted.h',
+                              'src/core/lib/gpr++/ref_counted_ptr.h',
                               'src/core/lib/http/format_request.h',
                               'src/core/lib/http/httpcli.h',
                               'src/core/lib/http/parser.h',
@@ -901,11 +906,6 @@ Pod::Spec.new do |s|
                               'src/core/lib/slice/slice_hash_table.h',
                               'src/core/lib/slice/slice_internal.h',
                               'src/core/lib/slice/slice_string_helpers.h',
-                              'src/core/lib/support/debug_location.h',
-                              'src/core/lib/support/orphanable.h',
-                              'src/core/lib/support/ref_counted.h',
-                              'src/core/lib/support/ref_counted_ptr.h',
-                              'src/core/lib/support/vector.h',
                               'src/core/lib/surface/alarm_internal.h',
                               'src/core/lib/surface/api_trace.h',
                               'src/core/lib/surface/call.h',
diff --git a/grpc.gemspec b/grpc.gemspec
index f8afaa5803c..5b1aebeaaa4 100644
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -83,68 +83,68 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/sync_generic.h )
   s.files += %w( include/grpc/impl/codegen/sync_posix.h )
   s.files += %w( include/grpc/impl/codegen/sync_windows.h )
+  s.files += %w( src/core/lib/gpr++/abstract.h )
+  s.files += %w( src/core/lib/gpr++/atomic.h )
+  s.files += %w( src/core/lib/gpr++/atomic_with_atm.h )
+  s.files += %w( src/core/lib/gpr++/atomic_with_std.h )
+  s.files += %w( src/core/lib/gpr++/manual_constructor.h )
+  s.files += %w( src/core/lib/gpr++/memory.h )
+  s.files += %w( src/core/lib/gpr/arena.h )
+  s.files += %w( src/core/lib/gpr/env.h )
+  s.files += %w( src/core/lib/gpr/fork.h )
+  s.files += %w( src/core/lib/gpr/mpscq.h )
+  s.files += %w( src/core/lib/gpr/murmur_hash.h )
+  s.files += %w( src/core/lib/gpr/spinlock.h )
+  s.files += %w( src/core/lib/gpr/string.h )
+  s.files += %w( src/core/lib/gpr/string_windows.h )
+  s.files += %w( src/core/lib/gpr/thd_internal.h )
+  s.files += %w( src/core/lib/gpr/time_precise.h )
+  s.files += %w( src/core/lib/gpr/tmpfile.h )
   s.files += %w( src/core/lib/profiling/timers.h )
-  s.files += %w( src/core/lib/support/abstract.h )
-  s.files += %w( src/core/lib/support/arena.h )
-  s.files += %w( src/core/lib/support/atomic.h )
-  s.files += %w( src/core/lib/support/atomic_with_atm.h )
-  s.files += %w( src/core/lib/support/atomic_with_std.h )
-  s.files += %w( src/core/lib/support/env.h )
-  s.files += %w( src/core/lib/support/fork.h )
-  s.files += %w( src/core/lib/support/manual_constructor.h )
-  s.files += %w( src/core/lib/support/memory.h )
-  s.files += %w( src/core/lib/support/mpscq.h )
-  s.files += %w( src/core/lib/support/murmur_hash.h )
-  s.files += %w( src/core/lib/support/spinlock.h )
-  s.files += %w( src/core/lib/support/string.h )
-  s.files += %w( src/core/lib/support/string_windows.h )
-  s.files += %w( src/core/lib/support/thd_internal.h )
-  s.files += %w( src/core/lib/support/time_precise.h )
-  s.files += %w( src/core/lib/support/tmpfile.h )
+  s.files += %w( src/core/lib/gpr/alloc.cc )
+  s.files += %w( src/core/lib/gpr/arena.cc )
+  s.files += %w( src/core/lib/gpr/atm.cc )
+  s.files += %w( src/core/lib/gpr/avl.cc )
+  s.files += %w( src/core/lib/gpr/cmdline.cc )
+  s.files += %w( src/core/lib/gpr/cpu_iphone.cc )
+  s.files += %w( src/core/lib/gpr/cpu_linux.cc )
+  s.files += %w( src/core/lib/gpr/cpu_posix.cc )
+  s.files += %w( src/core/lib/gpr/cpu_windows.cc )
+  s.files += %w( src/core/lib/gpr/env_linux.cc )
+  s.files += %w( src/core/lib/gpr/env_posix.cc )
+  s.files += %w( src/core/lib/gpr/env_windows.cc )
+  s.files += %w( src/core/lib/gpr/fork.cc )
+  s.files += %w( src/core/lib/gpr/host_port.cc )
+  s.files += %w( src/core/lib/gpr/log.cc )
+  s.files += %w( src/core/lib/gpr/log_android.cc )
+  s.files += %w( src/core/lib/gpr/log_linux.cc )
+  s.files += %w( src/core/lib/gpr/log_posix.cc )
+  s.files += %w( src/core/lib/gpr/log_windows.cc )
+  s.files += %w( src/core/lib/gpr/mpscq.cc )
+  s.files += %w( src/core/lib/gpr/murmur_hash.cc )
+  s.files += %w( src/core/lib/gpr/string.cc )
+  s.files += %w( src/core/lib/gpr/string_posix.cc )
+  s.files += %w( src/core/lib/gpr/string_util_windows.cc )
+  s.files += %w( src/core/lib/gpr/string_windows.cc )
+  s.files += %w( src/core/lib/gpr/subprocess_posix.cc )
+  s.files += %w( src/core/lib/gpr/subprocess_windows.cc )
+  s.files += %w( src/core/lib/gpr/sync.cc )
+  s.files += %w( src/core/lib/gpr/sync_posix.cc )
+  s.files += %w( src/core/lib/gpr/sync_windows.cc )
+  s.files += %w( src/core/lib/gpr/thd.cc )
+  s.files += %w( src/core/lib/gpr/thd_posix.cc )
+  s.files += %w( src/core/lib/gpr/thd_windows.cc )
+  s.files += %w( src/core/lib/gpr/time.cc )
+  s.files += %w( src/core/lib/gpr/time_posix.cc )
+  s.files += %w( src/core/lib/gpr/time_precise.cc )
+  s.files += %w( src/core/lib/gpr/time_windows.cc )
+  s.files += %w( src/core/lib/gpr/tls_pthread.cc )
+  s.files += %w( src/core/lib/gpr/tmpfile_msys.cc )
+  s.files += %w( src/core/lib/gpr/tmpfile_posix.cc )
+  s.files += %w( src/core/lib/gpr/tmpfile_windows.cc )
+  s.files += %w( src/core/lib/gpr/wrap_memcpy.cc )
   s.files += %w( src/core/lib/profiling/basic_timers.cc )
   s.files += %w( src/core/lib/profiling/stap_timers.cc )
-  s.files += %w( src/core/lib/support/alloc.cc )
-  s.files += %w( src/core/lib/support/arena.cc )
-  s.files += %w( src/core/lib/support/atm.cc )
-  s.files += %w( src/core/lib/support/avl.cc )
-  s.files += %w( src/core/lib/support/cmdline.cc )
-  s.files += %w( src/core/lib/support/cpu_iphone.cc )
-  s.files += %w( src/core/lib/support/cpu_linux.cc )
-  s.files += %w( src/core/lib/support/cpu_posix.cc )
-  s.files += %w( src/core/lib/support/cpu_windows.cc )
-  s.files += %w( src/core/lib/support/env_linux.cc )
-  s.files += %w( src/core/lib/support/env_posix.cc )
-  s.files += %w( src/core/lib/support/env_windows.cc )
-  s.files += %w( src/core/lib/support/fork.cc )
-  s.files += %w( src/core/lib/support/host_port.cc )
-  s.files += %w( src/core/lib/support/log.cc )
-  s.files += %w( src/core/lib/support/log_android.cc )
-  s.files += %w( src/core/lib/support/log_linux.cc )
-  s.files += %w( src/core/lib/support/log_posix.cc )
-  s.files += %w( src/core/lib/support/log_windows.cc )
-  s.files += %w( src/core/lib/support/mpscq.cc )
-  s.files += %w( src/core/lib/support/murmur_hash.cc )
-  s.files += %w( src/core/lib/support/string.cc )
-  s.files += %w( src/core/lib/support/string_posix.cc )
-  s.files += %w( src/core/lib/support/string_util_windows.cc )
-  s.files += %w( src/core/lib/support/string_windows.cc )
-  s.files += %w( src/core/lib/support/subprocess_posix.cc )
-  s.files += %w( src/core/lib/support/subprocess_windows.cc )
-  s.files += %w( src/core/lib/support/sync.cc )
-  s.files += %w( src/core/lib/support/sync_posix.cc )
-  s.files += %w( src/core/lib/support/sync_windows.cc )
-  s.files += %w( src/core/lib/support/thd.cc )
-  s.files += %w( src/core/lib/support/thd_posix.cc )
-  s.files += %w( src/core/lib/support/thd_windows.cc )
-  s.files += %w( src/core/lib/support/time.cc )
-  s.files += %w( src/core/lib/support/time_posix.cc )
-  s.files += %w( src/core/lib/support/time_precise.cc )
-  s.files += %w( src/core/lib/support/time_windows.cc )
-  s.files += %w( src/core/lib/support/tls_pthread.cc )
-  s.files += %w( src/core/lib/support/tmpfile_msys.cc )
-  s.files += %w( src/core/lib/support/tmpfile_posix.cc )
-  s.files += %w( src/core/lib/support/tmpfile_windows.cc )
-  s.files += %w( src/core/lib/support/wrap_memcpy.cc )
   s.files += %w( include/grpc/impl/codegen/byte_buffer.h )
   s.files += %w( include/grpc/impl/codegen/byte_buffer_reader.h )
   s.files += %w( include/grpc/impl/codegen/compression_types.h )
@@ -270,6 +270,11 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/compression/stream_compression_identity.h )
   s.files += %w( src/core/lib/debug/stats.h )
   s.files += %w( src/core/lib/debug/stats_data.h )
+  s.files += %w( src/core/lib/gpr++/debug_location.h )
+  s.files += %w( src/core/lib/gpr++/inlined_vector.h )
+  s.files += %w( src/core/lib/gpr++/orphanable.h )
+  s.files += %w( src/core/lib/gpr++/ref_counted.h )
+  s.files += %w( src/core/lib/gpr++/ref_counted_ptr.h )
   s.files += %w( src/core/lib/http/format_request.h )
   s.files += %w( src/core/lib/http/httpcli.h )
   s.files += %w( src/core/lib/http/parser.h )
@@ -345,11 +350,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/slice/slice_hash_table.h )
   s.files += %w( src/core/lib/slice/slice_internal.h )
   s.files += %w( src/core/lib/slice/slice_string_helpers.h )
-  s.files += %w( src/core/lib/support/debug_location.h )
-  s.files += %w( src/core/lib/support/orphanable.h )
-  s.files += %w( src/core/lib/support/ref_counted.h )
-  s.files += %w( src/core/lib/support/ref_counted_ptr.h )
-  s.files += %w( src/core/lib/support/vector.h )
   s.files += %w( src/core/lib/surface/alarm_internal.h )
   s.files += %w( src/core/lib/surface/api_trace.h )
   s.files += %w( src/core/lib/surface/call.h )
diff --git a/grpc.gyp b/grpc.gyp
index 281fbfa8a6e..49dcdf93a2c 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -161,50 +161,50 @@
       'dependencies': [
       ],
       'sources': [
+        'src/core/lib/gpr/alloc.cc',
+        'src/core/lib/gpr/arena.cc',
+        'src/core/lib/gpr/atm.cc',
+        'src/core/lib/gpr/avl.cc',
+        'src/core/lib/gpr/cmdline.cc',
+        'src/core/lib/gpr/cpu_iphone.cc',
+        'src/core/lib/gpr/cpu_linux.cc',
+        'src/core/lib/gpr/cpu_posix.cc',
+        'src/core/lib/gpr/cpu_windows.cc',
+        'src/core/lib/gpr/env_linux.cc',
+        'src/core/lib/gpr/env_posix.cc',
+        'src/core/lib/gpr/env_windows.cc',
+        'src/core/lib/gpr/fork.cc',
+        'src/core/lib/gpr/host_port.cc',
+        'src/core/lib/gpr/log.cc',
+        'src/core/lib/gpr/log_android.cc',
+        'src/core/lib/gpr/log_linux.cc',
+        'src/core/lib/gpr/log_posix.cc',
+        'src/core/lib/gpr/log_windows.cc',
+        'src/core/lib/gpr/mpscq.cc',
+        'src/core/lib/gpr/murmur_hash.cc',
+        'src/core/lib/gpr/string.cc',
+        'src/core/lib/gpr/string_posix.cc',
+        'src/core/lib/gpr/string_util_windows.cc',
+        'src/core/lib/gpr/string_windows.cc',
+        'src/core/lib/gpr/subprocess_posix.cc',
+        'src/core/lib/gpr/subprocess_windows.cc',
+        'src/core/lib/gpr/sync.cc',
+        'src/core/lib/gpr/sync_posix.cc',
+        'src/core/lib/gpr/sync_windows.cc',
+        'src/core/lib/gpr/thd.cc',
+        'src/core/lib/gpr/thd_posix.cc',
+        'src/core/lib/gpr/thd_windows.cc',
+        'src/core/lib/gpr/time.cc',
+        'src/core/lib/gpr/time_posix.cc',
+        'src/core/lib/gpr/time_precise.cc',
+        'src/core/lib/gpr/time_windows.cc',
+        'src/core/lib/gpr/tls_pthread.cc',
+        'src/core/lib/gpr/tmpfile_msys.cc',
+        'src/core/lib/gpr/tmpfile_posix.cc',
+        'src/core/lib/gpr/tmpfile_windows.cc',
+        'src/core/lib/gpr/wrap_memcpy.cc',
         'src/core/lib/profiling/basic_timers.cc',
         'src/core/lib/profiling/stap_timers.cc',
-        'src/core/lib/support/alloc.cc',
-        'src/core/lib/support/arena.cc',
-        'src/core/lib/support/atm.cc',
-        'src/core/lib/support/avl.cc',
-        'src/core/lib/support/cmdline.cc',
-        'src/core/lib/support/cpu_iphone.cc',
-        'src/core/lib/support/cpu_linux.cc',
-        'src/core/lib/support/cpu_posix.cc',
-        'src/core/lib/support/cpu_windows.cc',
-        'src/core/lib/support/env_linux.cc',
-        'src/core/lib/support/env_posix.cc',
-        'src/core/lib/support/env_windows.cc',
-        'src/core/lib/support/fork.cc',
-        'src/core/lib/support/host_port.cc',
-        'src/core/lib/support/log.cc',
-        'src/core/lib/support/log_android.cc',
-        'src/core/lib/support/log_linux.cc',
-        'src/core/lib/support/log_posix.cc',
-        'src/core/lib/support/log_windows.cc',
-        'src/core/lib/support/mpscq.cc',
-        'src/core/lib/support/murmur_hash.cc',
-        'src/core/lib/support/string.cc',
-        'src/core/lib/support/string_posix.cc',
-        'src/core/lib/support/string_util_windows.cc',
-        'src/core/lib/support/string_windows.cc',
-        'src/core/lib/support/subprocess_posix.cc',
-        'src/core/lib/support/subprocess_windows.cc',
-        'src/core/lib/support/sync.cc',
-        'src/core/lib/support/sync_posix.cc',
-        'src/core/lib/support/sync_windows.cc',
-        'src/core/lib/support/thd.cc',
-        'src/core/lib/support/thd_posix.cc',
-        'src/core/lib/support/thd_windows.cc',
-        'src/core/lib/support/time.cc',
-        'src/core/lib/support/time_posix.cc',
-        'src/core/lib/support/time_precise.cc',
-        'src/core/lib/support/time_windows.cc',
-        'src/core/lib/support/tls_pthread.cc',
-        'src/core/lib/support/tmpfile_msys.cc',
-        'src/core/lib/support/tmpfile_posix.cc',
-        'src/core/lib/support/tmpfile_windows.cc',
-        'src/core/lib/support/wrap_memcpy.cc',
       ],
     },
     {
diff --git a/package.xml b/package.xml
index 8c590348b6c..f1282964c2b 100644
--- a/package.xml
+++ b/package.xml
@@ -95,68 +95,68 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_generic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_posix.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_windows.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/abstract.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/atomic.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/atomic_with_atm.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/atomic_with_std.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/manual_constructor.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/memory.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/arena.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/env.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/fork.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/mpscq.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/murmur_hash.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/spinlock.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/string.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/string_windows.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/thd_internal.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/time_precise.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/tmpfile.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/profiling/timers.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/abstract.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/arena.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/atomic.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/atomic_with_atm.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/atomic_with_std.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/env.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/fork.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/manual_constructor.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/memory.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/mpscq.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/murmur_hash.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/spinlock.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/string.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/string_windows.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/thd_internal.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/time_precise.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/tmpfile.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/alloc.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/arena.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/atm.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/avl.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/cmdline.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/cpu_iphone.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/cpu_linux.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/cpu_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/cpu_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/env_linux.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/env_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/env_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/fork.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/host_port.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/log.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/log_android.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/log_linux.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/log_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/log_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/mpscq.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/murmur_hash.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/string.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/string_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/string_util_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/string_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/subprocess_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/subprocess_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/sync.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/sync_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/sync_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/thd.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/thd_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/thd_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/time.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/time_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/time_precise.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/time_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/tls_pthread.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/tmpfile_msys.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/tmpfile_posix.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/tmpfile_windows.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr/wrap_memcpy.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/profiling/basic_timers.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/profiling/stap_timers.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/alloc.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/arena.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/atm.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/avl.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/cmdline.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/cpu_iphone.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/cpu_linux.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/cpu_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/cpu_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/env_linux.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/env_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/env_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/fork.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/host_port.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/log.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/log_android.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/log_linux.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/log_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/log_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/mpscq.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/murmur_hash.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/string.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/string_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/string_util_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/string_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/subprocess_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/subprocess_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/sync.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/sync_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/sync_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/thd.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/thd_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/thd_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/time.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/time_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/time_precise.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/time_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/tls_pthread.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/tmpfile_msys.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/tmpfile_posix.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/tmpfile_windows.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/wrap_memcpy.cc" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer_reader.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/compression_types.h" role="src" />
@@ -282,6 +282,11 @@
     <file baseinstalldir="/" name="src/core/lib/compression/stream_compression_identity.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/debug/stats.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/debug/stats_data.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/debug_location.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/inlined_vector.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/orphanable.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/ref_counted.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/gpr++/ref_counted_ptr.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/format_request.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/httpcli.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/parser.h" role="src" />
@@ -357,11 +362,6 @@
     <file baseinstalldir="/" name="src/core/lib/slice/slice_hash_table.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice_string_helpers.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/debug_location.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/orphanable.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/ref_counted.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/ref_counted_ptr.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/vector.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/alarm_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/api_trace.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/call.h" role="src" />
diff --git a/src/core/ext/filters/client_channel/backup_poller.cc b/src/core/ext/filters/client_channel/backup_poller.cc
index 4ee5e9c1093..906a72b6627 100644
--- a/src/core/ext/filters/client_channel/backup_poller.cc
+++ b/src/core/ext/filters/client_channel/backup_poller.cc
@@ -23,11 +23,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/pollset.h"
 #include "src/core/lib/iomgr/timer.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/completion_queue.h"
 
diff --git a/src/core/ext/filters/client_channel/client_channel.cc b/src/core/ext/filters/client_channel/client_channel.cc
index bb29f65af97..a8a7a37be01 100644
--- a/src/core/ext/filters/client_channel/client_channel.cc
+++ b/src/core/ext/filters/client_channel/client_channel.cc
@@ -41,12 +41,12 @@
 #include "src/core/ext/filters/deadline/deadline_filter.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/iomgr/polling_entity.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/transport/connectivity_state.h"
 #include "src/core/lib/transport/metadata.h"
diff --git a/src/core/ext/filters/client_channel/http_connect_handshaker.cc b/src/core/ext/filters/client_channel/http_connect_handshaker.cc
index 556a3bc6a18..6bfd0388874 100644
--- a/src/core/ext/filters/client_channel/http_connect_handshaker.cc
+++ b/src/core/ext/filters/client_channel/http_connect_handshaker.cc
@@ -30,11 +30,11 @@
 #include "src/core/ext/filters/client_channel/uri_parser.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/format_request.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 
 typedef struct http_connect_handshaker {
   // Base class.  Must be first.
diff --git a/src/core/ext/filters/client_channel/http_proxy.cc b/src/core/ext/filters/client_channel/http_proxy.cc
index 2eafeee7026..037c65822aa 100644
--- a/src/core/ext/filters/client_channel/http_proxy.cc
+++ b/src/core/ext/filters/client_channel/http_proxy.cc
@@ -30,9 +30,9 @@
 #include "src/core/ext/filters/client_channel/proxy_mapper_registry.h"
 #include "src/core/ext/filters/client_channel/uri_parser.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/b64.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 
 /**
  * Parses the 'http_proxy' env var and returns the proxy hostname to resolve or
diff --git a/src/core/ext/filters/client_channel/lb_policy.h b/src/core/ext/filters/client_channel/lb_policy.h
index 0cc0cb59c3e..e19726efb3b 100644
--- a/src/core/ext/filters/client_channel/lb_policy.h
+++ b/src/core/ext/filters/client_channel/lb_policy.h
@@ -20,8 +20,8 @@
 #define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H
 
 #include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/lib/gpr++/ref_counted_ptr.h"
 #include "src/core/lib/iomgr/polling_entity.h"
-#include "src/core/lib/support/ref_counted_ptr.h"
 #include "src/core/lib/transport/connectivity_state.h"
 
 /** A load balancing policy: specified by a vtable and a struct (which
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc
index a8c5fb9c1bc..eb5ced4c201 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc
@@ -106,6 +106,8 @@
 #include "src/core/lib/backoff/backoff.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
@@ -113,8 +115,6 @@
 #include "src/core/lib/slice/slice_hash_table.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/manual_constructor.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/channel_init.h"
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc
index a8ecea42125..1e7f34bdc7e 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc
@@ -22,8 +22,8 @@
 #include "src/core/ext/filters/client_channel/client_channel.h"
 #include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/string.h"
 
 grpc_channel* grpc_lb_policy_grpclb_create_lb_channel(
     const char* lb_service_target_addresses,
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc
index 76bcddf9453..15233d371ce 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc
@@ -22,11 +22,11 @@
 #include "src/core/ext/filters/client_channel/client_channel.h"
 #include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/security/credentials/credentials.h"
 #include "src/core/lib/security/transport/lb_targets_info.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 
 grpc_channel* grpc_lb_policy_grpclb_create_lb_channel(
     const char* lb_service_target_addresses,
diff --git a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc
index 5a36acaa572..e217a0b0c00 100644
--- a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc
+++ b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc
@@ -34,9 +34,9 @@
 #include "src/core/ext/filters/client_channel/subchannel_index.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr++/ref_counted_ptr.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/ref_counted_ptr.h"
 #include "src/core/lib/transport/connectivity_state.h"
 #include "src/core/lib/transport/static_metadata.h"
 
diff --git a/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h b/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h
index f146c724e07..f4e345def6b 100644
--- a/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h
+++ b/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h
@@ -22,7 +22,7 @@
 #include "src/core/ext/filters/client_channel/lb_policy_registry.h"
 #include "src/core/ext/filters/client_channel/subchannel.h"
 #include "src/core/lib/debug/trace.h"
-#include "src/core/lib/support/ref_counted_ptr.h"
+#include "src/core/lib/gpr++/ref_counted_ptr.h"
 #include "src/core/lib/transport/connectivity_state.h"
 
 // TODO(roth): This code is intended to be shared between pick_first and
diff --git a/src/core/ext/filters/client_channel/lb_policy_registry.cc b/src/core/ext/filters/client_channel/lb_policy_registry.cc
index edd0330c6a7..8414504e8fb 100644
--- a/src/core/ext/filters/client_channel/lb_policy_registry.cc
+++ b/src/core/ext/filters/client_channel/lb_policy_registry.cc
@@ -20,7 +20,7 @@
 
 #include <string.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 #define MAX_POLICIES 10
 
diff --git a/src/core/ext/filters/client_channel/parse_address.cc b/src/core/ext/filters/client_channel/parse_address.cc
index 39b1237c770..c3309e36a3c 100644
--- a/src/core/ext/filters/client_channel/parse_address.cc
+++ b/src/core/ext/filters/client_channel/parse_address.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 #ifdef GRPC_HAVE_UNIX_SOCKET
 
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc
index 4659a5f3ede..7ea3cdd6e19 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc
@@ -34,14 +34,14 @@
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/backoff/backoff.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/gethostname.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/json/json.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/manual_constructor.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/service_config.h"
 
 #define GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS 1
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc
index 40e264504cf..2eb2a9b59d8 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc
@@ -30,10 +30,10 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/string.h"
 
 typedef struct fd_node {
   /** the owner of this fd node */
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc
index 3a870b2d061..2b35bdb6059 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc
@@ -36,12 +36,12 @@
 
 #include "src/core/ext/filters/client_channel/parse_address.h"
 #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/nameser.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/string.h"
 
 static gpr_once g_basic_init = GPR_ONCE_INIT;
 static gpr_mu g_init_mu;
diff --git a/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc b/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc
index 1c2cfc08e7b..93a1fe87a28 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc
+++ b/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc
@@ -29,12 +29,12 @@
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/backoff/backoff.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/timer.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/manual_constructor.h"
-#include "src/core/lib/support/string.h"
 
 #define GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS 1
 #define GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER 1.6
diff --git a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc
index fe3ad1403c2..eaa5e6ac490 100644
--- a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc
+++ b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc
@@ -32,13 +32,13 @@
 #include "src/core/ext/filters/client_channel/parse_address.h"
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
 
diff --git a/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc b/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc
index 7d1e283fa3a..99ad78e23ca 100644
--- a/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc
+++ b/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc
@@ -30,12 +30,12 @@
 #include "src/core/ext/filters/client_channel/parse_address.h"
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 typedef struct {
   /** base class: must be first */
diff --git a/src/core/ext/filters/client_channel/subchannel.cc b/src/core/ext/filters/client_channel/subchannel.cc
index 5b8a14b9e7b..fe4fcbbb7d3 100644
--- a/src/core/ext/filters/client_channel/subchannel.cc
+++ b/src/core/ext/filters/client_channel/subchannel.cc
@@ -37,12 +37,12 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr++/debug_location.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/debug_location.h"
-#include "src/core/lib/support/manual_constructor.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/transport/connectivity_state.h"
diff --git a/src/core/ext/filters/client_channel/subchannel.h b/src/core/ext/filters/client_channel/subchannel.h
index 3bcc5c2432e..f2a5c1e2732 100644
--- a/src/core/ext/filters/client_channel/subchannel.h
+++ b/src/core/ext/filters/client_channel/subchannel.h
@@ -21,10 +21,10 @@
 
 #include "src/core/ext/filters/client_channel/connector.h"
 #include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr++/ref_counted.h"
+#include "src/core/lib/gpr++/ref_counted_ptr.h"
+#include "src/core/lib/gpr/arena.h"
 #include "src/core/lib/iomgr/polling_entity.h"
-#include "src/core/lib/support/arena.h"
-#include "src/core/lib/support/ref_counted.h"
-#include "src/core/lib/support/ref_counted_ptr.h"
 #include "src/core/lib/transport/connectivity_state.h"
 #include "src/core/lib/transport/metadata.h"
 
diff --git a/src/core/ext/filters/client_channel/uri_parser.cc b/src/core/ext/filters/client_channel/uri_parser.cc
index 3428f4b54c5..c5f2d6822cd 100644
--- a/src/core/ext/filters/client_channel/uri_parser.cc
+++ b/src/core/ext/filters/client_channel/uri_parser.cc
@@ -26,10 +26,10 @@
 #include <grpc/support/port_platform.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/percent_encoding.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 /** a size_t default value... maps to all 1's */
 #define NOT_SET (~(size_t)0)
diff --git a/src/core/ext/filters/http/client/http_client_filter.cc b/src/core/ext/filters/http/client/http_client_filter.cc
index 6dbd8c2a6d5..5584d50018e 100644
--- a/src/core/ext/filters/http/client/http_client_filter.cc
+++ b/src/core/ext/filters/http/client/http_client_filter.cc
@@ -20,12 +20,12 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <string.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/percent_encoding.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "src/core/lib/transport/transport_impl.h"
 
diff --git a/src/core/ext/filters/http/message_compress/message_compress_filter.cc b/src/core/ext/filters/http/message_compress/message_compress_filter.cc
index 92d17162001..d0b97504973 100644
--- a/src/core/ext/filters/http/message_compress/message_compress_filter.cc
+++ b/src/core/ext/filters/http/message_compress/message_compress_filter.cc
@@ -28,10 +28,10 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/compression/algorithm_metadata.h"
 #include "src/core/lib/compression/message_compress.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/transport/static_metadata.h"
 
diff --git a/src/core/ext/filters/message_size/message_size_filter.cc b/src/core/ext/filters/message_size/message_size_filter.cc
index 3cb7b136c00..8d76c4a837b 100644
--- a/src/core/ext/filters/message_size/message_size_filter.cc
+++ b/src/core/ext/filters/message_size/message_size_filter.cc
@@ -26,7 +26,7 @@
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/channel_stack_builder.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/transport/service_config.h"
 
diff --git a/src/core/ext/transport/chttp2/transport/bin_decoder.cc b/src/core/ext/transport/chttp2/transport/bin_decoder.cc
index 984cd4ca78c..74778ac0468 100644
--- a/src/core/ext/transport/chttp2/transport/bin_decoder.cc
+++ b/src/core/ext/transport/chttp2/transport/bin_decoder.cc
@@ -19,9 +19,9 @@
 #include "src/core/ext/transport/chttp2/transport/bin_decoder.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 static uint8_t decode_table[] = {
     0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_plugin.cc b/src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
index 3aca61fdac7..a69908116ab 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
+++ b/src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
@@ -18,7 +18,7 @@
 
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/debug/trace.h"
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/transport/metadata.h"
 
 void grpc_chttp2_plugin_init(void) {
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.cc b/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
index 835de6aa0f4..e067b696a16 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
@@ -38,14 +38,14 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/compression/stream_compression.h"
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/error_utils.h"
 #include "src/core/lib/transport/http2_errors.h"
 #include "src/core/lib/transport/static_metadata.h"
diff --git a/src/core/ext/transport/chttp2/transport/flow_control.cc b/src/core/ext/transport/chttp2/transport/flow_control.cc
index 3013db23f70..581241d392d 100644
--- a/src/core/ext/transport/chttp2/transport/flow_control.cc
+++ b/src/core/ext/transport/chttp2/transport/flow_control.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/ext/transport/chttp2/transport/internal.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 grpc_core::TraceFlag grpc_flowctl_trace(false, "flowctl");
 
diff --git a/src/core/ext/transport/chttp2/transport/flow_control.h b/src/core/ext/transport/chttp2/transport/flow_control.h
index 38b9f50c8d4..7e83ea05cd5 100644
--- a/src/core/ext/transport/chttp2/transport/flow_control.h
+++ b/src/core/ext/transport/chttp2/transport/flow_control.h
@@ -24,8 +24,8 @@
 
 #include <grpc/support/useful.h>
 #include "src/core/ext/transport/chttp2/transport/http2_settings.h"
-#include "src/core/lib/support/abstract.h"
-#include "src/core/lib/support/manual_constructor.h"
+#include "src/core/lib/gpr++/abstract.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
 #include "src/core/lib/transport/bdp_estimator.h"
 #include "src/core/lib/transport/pid_controller.h"
 
diff --git a/src/core/ext/transport/chttp2/transport/frame_data.cc b/src/core/ext/transport/chttp2/transport/frame_data.cc
index 9b3a6acc9e4..043b80a3cb8 100644
--- a/src/core/ext/transport/chttp2/transport/frame_data.cc
+++ b/src/core/ext/transport/chttp2/transport/frame_data.cc
@@ -25,9 +25,9 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 #include "src/core/ext/transport/chttp2/transport/internal.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/transport.h"
 
 grpc_error* grpc_chttp2_data_parser_init(grpc_chttp2_data_parser* parser) {
diff --git a/src/core/ext/transport/chttp2/transport/hpack_parser.cc b/src/core/ext/transport/chttp2/transport/hpack_parser.cc
index a395ab234c0..ebee5913cb8 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_parser.cc
+++ b/src/core/ext/transport/chttp2/transport/hpack_parser.cc
@@ -31,10 +31,10 @@
 
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/http2_errors.h"
 
 typedef enum {
diff --git a/src/core/ext/transport/chttp2/transport/hpack_table.cc b/src/core/ext/transport/chttp2/transport/hpack_table.cc
index c325465daab..9fad158d275 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_table.cc
+++ b/src/core/ext/transport/chttp2/transport/hpack_table.cc
@@ -26,7 +26,7 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/lib/debug/trace.h"
-#include "src/core/lib/support/murmur_hash.h"
+#include "src/core/lib/gpr/murmur_hash.h"
 
 extern grpc_core::TraceFlag grpc_http_trace;
 
diff --git a/src/core/ext/transport/chttp2/transport/internal.h b/src/core/ext/transport/chttp2/transport/internal.h
index 8852d9ee2b0..de901f0ce89 100644
--- a/src/core/ext/transport/chttp2/transport/internal.h
+++ b/src/core/ext/transport/chttp2/transport/internal.h
@@ -35,10 +35,10 @@
 #include "src/core/ext/transport/chttp2/transport/incoming_metadata.h"
 #include "src/core/ext/transport/chttp2/transport/stream_map.h"
 #include "src/core/lib/compression/stream_compression.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/timer.h"
-#include "src/core/lib/support/manual_constructor.h"
 #include "src/core/lib/transport/connectivity_state.h"
 #include "src/core/lib/transport/transport_impl.h"
 
diff --git a/src/core/ext/transport/cronet/transport/cronet_transport.cc b/src/core/ext/transport/cronet/transport/cronet_transport.cc
index 5723da5f9d6..5b1c6ab3f9a 100644
--- a/src/core/ext/transport/cronet/transport/cronet_transport.cc
+++ b/src/core/ext/transport/cronet/transport/cronet_transport.cc
@@ -28,11 +28,11 @@
 
 #include "src/core/ext/transport/chttp2/transport/incoming_metadata.h"
 #include "src/core/ext/transport/cronet/transport/cronet_transport.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/transport/metadata_batch.h"
 #include "src/core/lib/transport/static_metadata.h"
diff --git a/src/core/lib/channel/channel_args.cc b/src/core/lib/channel/channel_args.cc
index 578475b2484..634286d403f 100644
--- a/src/core/lib/channel/channel_args.cc
+++ b/src/core/lib/channel/channel_args.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/channel/channel_args.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 static grpc_arg copy_arg(const grpc_arg* src) {
   grpc_arg dst;
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index 716866be26a..b9f97480012 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -40,9 +40,9 @@
 #include <grpc/support/time.h>
 
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/arena.h"
 #include "src/core/lib/iomgr/call_combiner.h"
 #include "src/core/lib/iomgr/polling_entity.h"
-#include "src/core/lib/support/arena.h"
 #include "src/core/lib/transport/transport.h"
 
 typedef struct grpc_channel_element grpc_channel_element;
diff --git a/src/core/lib/channel/connected_channel.cc b/src/core/lib/channel/connected_channel.cc
index 9d07cfff4e5..fb26bdf586b 100644
--- a/src/core/lib/channel/connected_channel.cc
+++ b/src/core/lib/channel/connected_channel.cc
@@ -26,8 +26,8 @@
 #include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/transport.h"
 
 #define MAX_BUFFER_LENGTH 8192
diff --git a/src/core/lib/debug/stats.cc b/src/core/lib/debug/stats.cc
index 0b39b2b1e71..465c76114d4 100644
--- a/src/core/lib/debug/stats.cc
+++ b/src/core/lib/debug/stats.cc
@@ -25,7 +25,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 grpc_stats_data* grpc_stats_per_cpu_storage = nullptr;
 static size_t g_num_cores;
diff --git a/src/core/lib/debug/trace.cc b/src/core/lib/debug/trace.cc
index a76c1afb4c5..d870bbc5e7c 100644
--- a/src/core/lib/debug/trace.cc
+++ b/src/core/lib/debug/trace.cc
@@ -23,7 +23,7 @@
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 
 int grpc_tracer_set_enabled(const char* name, int enabled);
 
diff --git a/src/core/lib/gpr++/README.md b/src/core/lib/gpr++/README.md
new file mode 100644
index 00000000000..eab018bb312
--- /dev/null
+++ b/src/core/lib/gpr++/README.md
@@ -0,0 +1,16 @@
+# GPR++ - Google Portable Runtime for C++
+
+The files in this directory contain various utility code for C++ code.
+None of this code is gRPC-specific; anything here may also be useful
+for other open source projects written in C++.
+
+Note that this is one of the few places in src/core where we allow
+the use of portability macros.
+
+Note that this is the only place in src/core where we allow
+use of the C++ standard library (i.e., anything in the `std::`
+namespace).  And for now, we require that any use of the
+standard library is build-time-only -- i.e., we do not allow
+run-time dependencies on libstdc++.  For more details, see
+[gRFC L6](/grpc/proposal/blob/master/L6-allow-c%2B%2B-in-grpc-core.md) and
+[Moving gRPC core to C++](/grpc/grpc/blob/master/doc/core/moving-to-c%2B%2B.md).
diff --git a/src/core/lib/support/abstract.h b/src/core/lib/gpr++/abstract.h
similarity index 90%
rename from src/core/lib/support/abstract.h
rename to src/core/lib/gpr++/abstract.h
index 1dffa301282..51d75723026 100644
--- a/src/core/lib/support/abstract.h
+++ b/src/core/lib/gpr++/abstract.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_ABSTRACT_H
-#define GRPC_CORE_LIB_SUPPORT_ABSTRACT_H
+#ifndef GRPC_CORE_LIB_GPRXX_ABSTRACT_H
+#define GRPC_CORE_LIB_GPRXX_ABSTRACT_H
 
 // This is needed to support abstract base classes in the c core. Since gRPC
 // doesn't have a c++ runtime, it will hit a linker error on delete unless
@@ -31,4 +31,4 @@
 #define GRPC_ABSTRACT \
   { GPR_ASSERT(false); }
 
-#endif /* GRPC_CORE_LIB_SUPPORT_ABSTRACT_H */
+#endif /* GRPC_CORE_LIB_GPRXX_ABSTRACT_H */
diff --git a/src/core/lib/support/atomic.h b/src/core/lib/gpr++/atomic.h
similarity index 75%
rename from src/core/lib/support/atomic.h
rename to src/core/lib/gpr++/atomic.h
index 73c59ae3cd0..d68ccea864f 100644
--- a/src/core/lib/support/atomic.h
+++ b/src/core/lib/gpr++/atomic.h
@@ -16,15 +16,15 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_ATOMIC_H
-#define GRPC_CORE_LIB_SUPPORT_ATOMIC_H
+#ifndef GRPC_CORE_LIB_GPRXX_ATOMIC_H
+#define GRPC_CORE_LIB_GPRXX_ATOMIC_H
 
 #include <grpc/support/port_platform.h>
 
 #ifdef GPR_HAS_CXX11_ATOMIC
-#include "src/core/lib/support/atomic_with_std.h"
+#include "src/core/lib/gpr++/atomic_with_std.h"
 #else
-#include "src/core/lib/support/atomic_with_atm.h"
+#include "src/core/lib/gpr++/atomic_with_atm.h"
 #endif
 
-#endif /* GRPC_CORE_LIB_SUPPORT_ATOMIC_H */
+#endif /* GRPC_CORE_LIB_GPRXX_ATOMIC_H */
diff --git a/src/core/lib/support/atomic_with_atm.h b/src/core/lib/gpr++/atomic_with_atm.h
similarity index 90%
rename from src/core/lib/support/atomic_with_atm.h
rename to src/core/lib/gpr++/atomic_with_atm.h
index fe00e9b5bc5..09490e8148e 100644
--- a/src/core/lib/support/atomic_with_atm.h
+++ b/src/core/lib/gpr++/atomic_with_atm.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_ATOMIC_WITH_ATM_H
-#define GRPC_CORE_LIB_SUPPORT_ATOMIC_WITH_ATM_H
+#ifndef GRPC_CORE_LIB_GPRXX_ATOMIC_WITH_ATM_H
+#define GRPC_CORE_LIB_GPRXX_ATOMIC_WITH_ATM_H
 
 #include <grpc/support/atm.h>
 
@@ -52,4 +52,4 @@ class atomic<bool> {
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_SUPPORT_ATOMIC_WITH_ATM_H */
+#endif /* GRPC_CORE_LIB_GPRXX_ATOMIC_WITH_ATM_H */
diff --git a/src/core/lib/support/atomic_with_std.h b/src/core/lib/gpr++/atomic_with_std.h
similarity index 83%
rename from src/core/lib/support/atomic_with_std.h
rename to src/core/lib/gpr++/atomic_with_std.h
index c7a92f70124..b6ff90655e9 100644
--- a/src/core/lib/support/atomic_with_std.h
+++ b/src/core/lib/gpr++/atomic_with_std.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_ATOMIC_WITH_STD_H
-#define GRPC_CORE_LIB_SUPPORT_ATOMIC_WITH_STD_H
+#ifndef GRPC_CORE_LIB_GPRXX_ATOMIC_WITH_STD_H
+#define GRPC_CORE_LIB_GPRXX_ATOMIC_WITH_STD_H
 
 #include <atomic>
 
@@ -30,4 +30,4 @@ typedef std::memory_order memory_order;
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_SUPPORT_ATOMIC_WITH_STD_H */
+#endif /* GRPC_CORE_LIB_GPRXX_ATOMIC_WITH_STD_H */
diff --git a/src/core/lib/support/debug_location.h b/src/core/lib/gpr++/debug_location.h
similarity index 90%
rename from src/core/lib/support/debug_location.h
rename to src/core/lib/gpr++/debug_location.h
index 9b3f9220fc9..5a8665ce193 100644
--- a/src/core/lib/support/debug_location.h
+++ b/src/core/lib/gpr++/debug_location.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_DEBUG_LOCATION_H
-#define GRPC_CORE_LIB_SUPPORT_DEBUG_LOCATION_H
+#ifndef GRPC_CORE_LIB_GPRXX_DEBUG_LOCATION_H
+#define GRPC_CORE_LIB_GPRXX_DEBUG_LOCATION_H
 
 namespace grpc_core {
 
@@ -49,4 +49,4 @@ class DebugLocation {
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_SUPPORT_DEBUG_LOCATION_H */
+#endif /* GRPC_CORE_LIB_GPRXX_DEBUG_LOCATION_H */
diff --git a/src/core/lib/support/vector.h b/src/core/lib/gpr++/inlined_vector.h
similarity index 94%
rename from src/core/lib/support/vector.h
rename to src/core/lib/gpr++/inlined_vector.h
index 2f249a5b9e8..17ee9e16bbe 100644
--- a/src/core/lib/support/vector.h
+++ b/src/core/lib/gpr++/inlined_vector.h
@@ -16,12 +16,12 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_VECTOR_H
-#define GRPC_CORE_LIB_SUPPORT_VECTOR_H
+#ifndef GRPC_CORE_LIB_GPRXX_INLINED_VECTOR_H
+#define GRPC_CORE_LIB_GPRXX_INLINED_VECTOR_H
 
 #include <cassert>
 
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 
 namespace grpc_core {
 
@@ -109,4 +109,4 @@ class InlinedVector {
 
 }  // namespace grpc_core
 
-#endif
+#endif /* GRPC_CORE_LIB_GPRXX_INLINED_VECTOR_H */
diff --git a/src/core/lib/support/manual_constructor.h b/src/core/lib/gpr++/manual_constructor.h
similarity index 98%
rename from src/core/lib/support/manual_constructor.h
rename to src/core/lib/gpr++/manual_constructor.h
index fda7653dbce..a3f006da341 100644
--- a/src/core/lib/support/manual_constructor.h
+++ b/src/core/lib/gpr++/manual_constructor.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_MANUAL_CONSTRUCTOR_H
-#define GRPC_CORE_LIB_SUPPORT_MANUAL_CONSTRUCTOR_H
+#ifndef GRPC_CORE_LIB_GPRXX_MANUAL_CONSTRUCTOR_H
+#define GRPC_CORE_LIB_GPRXX_MANUAL_CONSTRUCTOR_H
 
 // manually construct a region of memory with some type
 
diff --git a/src/core/lib/support/memory.h b/src/core/lib/gpr++/memory.h
similarity index 95%
rename from src/core/lib/support/memory.h
rename to src/core/lib/gpr++/memory.h
index 695418e3e1e..75ed3d6ceae 100644
--- a/src/core/lib/support/memory.h
+++ b/src/core/lib/gpr++/memory.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_MEMORY_H
-#define GRPC_CORE_LIB_SUPPORT_MEMORY_H
+#ifndef GRPC_CORE_LIB_GPRXX_MEMORY_H
+#define GRPC_CORE_LIB_GPRXX_MEMORY_H
 
 #include <grpc/support/alloc.h>
 
@@ -97,4 +97,4 @@ class Allocator {
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_SUPPORT_MEMORY_H */
+#endif /* GRPC_CORE_LIB_GPRXX_MEMORY_H */
diff --git a/src/core/lib/support/orphanable.h b/src/core/lib/gpr++/orphanable.h
similarity index 94%
rename from src/core/lib/support/orphanable.h
rename to src/core/lib/gpr++/orphanable.h
index 2f537573fd4..f106e74dde0 100644
--- a/src/core/lib/support/orphanable.h
+++ b/src/core/lib/gpr++/orphanable.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_ORPHANABLE_H
-#define GRPC_CORE_LIB_SUPPORT_ORPHANABLE_H
+#ifndef GRPC_CORE_LIB_GPRXX_ORPHANABLE_H
+#define GRPC_CORE_LIB_GPRXX_ORPHANABLE_H
 
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
@@ -25,9 +25,9 @@
 #include <memory>
 
 #include "src/core/lib/debug/trace.h"
-#include "src/core/lib/support/abstract.h"
-#include "src/core/lib/support/debug_location.h"
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/abstract.h"
+#include "src/core/lib/gpr++/debug_location.h"
+#include "src/core/lib/gpr++/memory.h"
 
 namespace grpc_core {
 
@@ -168,4 +168,4 @@ class InternallyRefCountedWithTracing : public Orphanable {
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_SUPPORT_ORPHANABLE_H */
+#endif /* GRPC_CORE_LIB_GPRXX_ORPHANABLE_H */
diff --git a/src/core/lib/support/ref_counted.h b/src/core/lib/gpr++/ref_counted.h
similarity index 93%
rename from src/core/lib/support/ref_counted.h
rename to src/core/lib/gpr++/ref_counted.h
index 48c11f7bbfe..c2ae76c0aef 100644
--- a/src/core/lib/support/ref_counted.h
+++ b/src/core/lib/gpr++/ref_counted.h
@@ -16,16 +16,16 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_REF_COUNTED_H
-#define GRPC_CORE_LIB_SUPPORT_REF_COUNTED_H
+#ifndef GRPC_CORE_LIB_GPRXX_REF_COUNTED_H
+#define GRPC_CORE_LIB_GPRXX_REF_COUNTED_H
 
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
 #include "src/core/lib/debug/trace.h"
-#include "src/core/lib/support/abstract.h"
-#include "src/core/lib/support/debug_location.h"
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/abstract.h"
+#include "src/core/lib/gpr++/debug_location.h"
+#include "src/core/lib/gpr++/memory.h"
 
 namespace grpc_core {
 
@@ -130,4 +130,4 @@ class RefCountedWithTracing {
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_SUPPORT_REF_COUNTED_H */
+#endif /* GRPC_CORE_LIB_GPRXX_REF_COUNTED_H */
diff --git a/src/core/lib/support/ref_counted_ptr.h b/src/core/lib/gpr++/ref_counted_ptr.h
similarity index 93%
rename from src/core/lib/support/ref_counted_ptr.h
rename to src/core/lib/gpr++/ref_counted_ptr.h
index 76ff0bba668..862294d1aa0 100644
--- a/src/core/lib/support/ref_counted_ptr.h
+++ b/src/core/lib/gpr++/ref_counted_ptr.h
@@ -16,12 +16,12 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_REF_COUNTED_PTR_H
-#define GRPC_CORE_LIB_SUPPORT_REF_COUNTED_PTR_H
+#ifndef GRPC_CORE_LIB_GPRXX_REF_COUNTED_PTR_H
+#define GRPC_CORE_LIB_GPRXX_REF_COUNTED_PTR_H
 
 #include <utility>
 
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 
 namespace grpc_core {
 
@@ -96,4 +96,4 @@ inline RefCountedPtr<T> MakeRefCounted(Args&&... args) {
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_SUPPORT_REF_COUNTED_PTR_H */
+#endif /* GRPC_CORE_LIB_GPRXX_REF_COUNTED_PTR_H */
diff --git a/src/core/lib/gpr/README.md b/src/core/lib/gpr/README.md
new file mode 100644
index 00000000000..21fb0c796db
--- /dev/null
+++ b/src/core/lib/gpr/README.md
@@ -0,0 +1,8 @@
+# GPR - Google Portable Runtime for C
+
+The files in this directory contain basic utility code and platform
+abstractions for C code.  None of this code is gRPC-specific; anything
+here may also be useful for other open source projects written in C.
+
+Note that this is one of the few places in src/core where we allow
+the use of portability macros.
diff --git a/src/core/lib/support/alloc.cc b/src/core/lib/gpr/alloc.cc
similarity index 100%
rename from src/core/lib/support/alloc.cc
rename to src/core/lib/gpr/alloc.cc
diff --git a/src/core/lib/support/arena.cc b/src/core/lib/gpr/arena.cc
similarity index 98%
rename from src/core/lib/support/arena.cc
rename to src/core/lib/gpr/arena.cc
index 5b9dd370d84..177c1767325 100644
--- a/src/core/lib/support/arena.cc
+++ b/src/core/lib/gpr/arena.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/arena.h"
+#include "src/core/lib/gpr/arena.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/log.h>
diff --git a/src/core/lib/support/arena.h b/src/core/lib/gpr/arena.h
similarity index 91%
rename from src/core/lib/support/arena.h
rename to src/core/lib/gpr/arena.h
index cfe973a0368..339771c0e3c 100644
--- a/src/core/lib/support/arena.h
+++ b/src/core/lib/gpr/arena.h
@@ -22,8 +22,8 @@
 // Tracks the total memory allocated against it, so that future arenas can
 // pre-allocate the right amount of memory
 
-#ifndef GRPC_CORE_LIB_SUPPORT_ARENA_H
-#define GRPC_CORE_LIB_SUPPORT_ARENA_H
+#ifndef GRPC_CORE_LIB_GPR_ARENA_H
+#define GRPC_CORE_LIB_GPR_ARENA_H
 
 #include <stddef.h>
 
@@ -36,4 +36,4 @@ void* gpr_arena_alloc(gpr_arena* arena, size_t size);
 // Destroy an arena, returning the total number of bytes allocated
 size_t gpr_arena_destroy(gpr_arena* arena);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_ARENA_H */
+#endif /* GRPC_CORE_LIB_GPR_ARENA_H */
diff --git a/src/core/lib/support/atm.cc b/src/core/lib/gpr/atm.cc
similarity index 100%
rename from src/core/lib/support/atm.cc
rename to src/core/lib/gpr/atm.cc
diff --git a/src/core/lib/support/avl.cc b/src/core/lib/gpr/avl.cc
similarity index 100%
rename from src/core/lib/support/avl.cc
rename to src/core/lib/gpr/avl.cc
diff --git a/src/core/lib/support/cmdline.cc b/src/core/lib/gpr/cmdline.cc
similarity index 99%
rename from src/core/lib/support/cmdline.cc
rename to src/core/lib/gpr/cmdline.cc
index da9f10a4963..4118f9a72a4 100644
--- a/src/core/lib/support/cmdline.cc
+++ b/src/core/lib/gpr/cmdline.cc
@@ -25,7 +25,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 typedef enum { ARGTYPE_INT, ARGTYPE_BOOL, ARGTYPE_STRING } argtype;
 
diff --git a/src/core/lib/support/cpu_iphone.cc b/src/core/lib/gpr/cpu_iphone.cc
similarity index 100%
rename from src/core/lib/support/cpu_iphone.cc
rename to src/core/lib/gpr/cpu_iphone.cc
diff --git a/src/core/lib/support/cpu_linux.cc b/src/core/lib/gpr/cpu_linux.cc
similarity index 100%
rename from src/core/lib/support/cpu_linux.cc
rename to src/core/lib/gpr/cpu_linux.cc
diff --git a/src/core/lib/support/cpu_posix.cc b/src/core/lib/gpr/cpu_posix.cc
similarity index 100%
rename from src/core/lib/support/cpu_posix.cc
rename to src/core/lib/gpr/cpu_posix.cc
diff --git a/src/core/lib/support/cpu_windows.cc b/src/core/lib/gpr/cpu_windows.cc
similarity index 100%
rename from src/core/lib/support/cpu_windows.cc
rename to src/core/lib/gpr/cpu_windows.cc
diff --git a/src/core/lib/support/env.h b/src/core/lib/gpr/env.h
similarity index 92%
rename from src/core/lib/support/env.h
rename to src/core/lib/gpr/env.h
index 2452fd330d9..7f35104be3e 100644
--- a/src/core/lib/support/env.h
+++ b/src/core/lib/gpr/env.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_ENV_H
-#define GRPC_CORE_LIB_SUPPORT_ENV_H
+#ifndef GRPC_CORE_LIB_GPR_ENV_H
+#define GRPC_CORE_LIB_GPR_ENV_H
 
 #include <stdio.h>
 
@@ -38,4 +38,4 @@ void gpr_setenv(const char* name, const char* value);
    level of logging. So DO NOT USE THIS. */
 const char* gpr_getenv_silent(const char* name, char** dst);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_ENV_H */
+#endif /* GRPC_CORE_LIB_GPR_ENV_H */
diff --git a/src/core/lib/support/env_linux.cc b/src/core/lib/gpr/env_linux.cc
similarity index 96%
rename from src/core/lib/support/env_linux.cc
rename to src/core/lib/gpr/env_linux.cc
index 0af2de9f7e0..17902c3d0b9 100644
--- a/src/core/lib/support/env_linux.cc
+++ b/src/core/lib/gpr/env_linux.cc
@@ -25,7 +25,7 @@
 
 #ifdef GPR_LINUX_ENV
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 
 #include <dlfcn.h>
 #include <features.h>
@@ -36,7 +36,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 const char* gpr_getenv_silent(const char* name, char** dst) {
   const char* insecure_func_used = nullptr;
diff --git a/src/core/lib/support/env_posix.cc b/src/core/lib/gpr/env_posix.cc
similarity index 93%
rename from src/core/lib/support/env_posix.cc
rename to src/core/lib/gpr/env_posix.cc
index 8146330555c..599f85aa72b 100644
--- a/src/core/lib/support/env_posix.cc
+++ b/src/core/lib/gpr/env_posix.cc
@@ -20,14 +20,14 @@
 
 #ifdef GPR_POSIX_ENV
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 
 #include <stdlib.h>
 
 #include <grpc/support/log.h>
 
 #include <grpc/support/string_util.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 const char* gpr_getenv_silent(const char* name, char** dst) {
   *dst = gpr_getenv(name);
diff --git a/src/core/lib/support/env_windows.cc b/src/core/lib/gpr/env_windows.cc
similarity index 93%
rename from src/core/lib/support/env_windows.cc
rename to src/core/lib/gpr/env_windows.cc
index cdb1d58ccd9..9ca1e02d038 100644
--- a/src/core/lib/support/env_windows.cc
+++ b/src/core/lib/gpr/env_windows.cc
@@ -22,9 +22,9 @@
 
 #include <windows.h>
 
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/string_windows.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/string_windows.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
diff --git a/src/core/lib/support/fork.cc b/src/core/lib/gpr/fork.cc
similarity index 95%
rename from src/core/lib/support/fork.cc
rename to src/core/lib/gpr/fork.cc
index dc291c40804..c47e686378e 100644
--- a/src/core/lib/support/fork.cc
+++ b/src/core/lib/gpr/fork.cc
@@ -16,14 +16,14 @@
  *
  */
 
-#include "src/core/lib/support/fork.h"
+#include "src/core/lib/gpr/fork.h"
 
 #include <string.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 
 /*
  * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
diff --git a/src/core/lib/support/fork.h b/src/core/lib/gpr/fork.h
similarity index 89%
rename from src/core/lib/support/fork.h
rename to src/core/lib/gpr/fork.h
index 215d4214a61..94c61bb836b 100644
--- a/src/core/lib/support/fork.h
+++ b/src/core/lib/gpr/fork.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_FORK_H
-#define GRPC_CORE_LIB_SUPPORT_FORK_H
+#ifndef GRPC_CORE_LIB_GPR_FORK_H
+#define GRPC_CORE_LIB_GPR_FORK_H
 
 /*
  * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
@@ -32,4 +32,4 @@ int grpc_fork_support_enabled(void);
 // environment variables/compile flags
 void grpc_enable_fork_support(int enable);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_FORK_H */
+#endif /* GRPC_CORE_LIB_GPR_FORK_H */
diff --git a/src/core/lib/support/host_port.cc b/src/core/lib/gpr/host_port.cc
similarity index 98%
rename from src/core/lib/support/host_port.cc
rename to src/core/lib/gpr/host_port.cc
index cb8e3d44797..29178279d3f 100644
--- a/src/core/lib/support/host_port.cc
+++ b/src/core/lib/gpr/host_port.cc
@@ -23,7 +23,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 int gpr_join_host_port(char** out, const char* host, int port) {
   if (host[0] != '[' && strchr(host, ':') != nullptr) {
diff --git a/src/core/lib/support/log.cc b/src/core/lib/gpr/log.cc
similarity index 97%
rename from src/core/lib/support/log.cc
rename to src/core/lib/gpr/log.cc
index 2a40745e97d..19c0f6c34d3 100644
--- a/src/core/lib/support/log.cc
+++ b/src/core/lib/gpr/log.cc
@@ -21,8 +21,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 
 #include <stdio.h>
 #include <string.h>
diff --git a/src/core/lib/support/log_android.cc b/src/core/lib/gpr/log_android.cc
similarity index 100%
rename from src/core/lib/support/log_android.cc
rename to src/core/lib/gpr/log_android.cc
diff --git a/src/core/lib/support/log_linux.cc b/src/core/lib/gpr/log_linux.cc
similarity index 100%
rename from src/core/lib/support/log_linux.cc
rename to src/core/lib/gpr/log_linux.cc
diff --git a/src/core/lib/support/log_posix.cc b/src/core/lib/gpr/log_posix.cc
similarity index 100%
rename from src/core/lib/support/log_posix.cc
rename to src/core/lib/gpr/log_posix.cc
diff --git a/src/core/lib/support/log_windows.cc b/src/core/lib/gpr/log_windows.cc
similarity index 96%
rename from src/core/lib/support/log_windows.cc
rename to src/core/lib/gpr/log_windows.cc
index 0013bf448fd..caaa973f5a8 100644
--- a/src/core/lib/support/log_windows.cc
+++ b/src/core/lib/gpr/log_windows.cc
@@ -29,8 +29,8 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/string_windows.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/string_windows.h"
 
 void gpr_log(const char* file, int line, gpr_log_severity severity,
              const char* format, ...) {
diff --git a/src/core/lib/support/mpscq.cc b/src/core/lib/gpr/mpscq.cc
similarity index 98%
rename from src/core/lib/support/mpscq.cc
rename to src/core/lib/gpr/mpscq.cc
index 47e896d2df6..34fc050a116 100644
--- a/src/core/lib/support/mpscq.cc
+++ b/src/core/lib/gpr/mpscq.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/mpscq.h"
+#include "src/core/lib/gpr/mpscq.h"
 
 #include <grpc/support/log.h>
 
diff --git a/src/core/lib/support/mpscq.h b/src/core/lib/gpr/mpscq.h
similarity index 96%
rename from src/core/lib/support/mpscq.h
rename to src/core/lib/gpr/mpscq.h
index 648ead1f5b5..4409c5c9f5e 100644
--- a/src/core/lib/support/mpscq.h
+++ b/src/core/lib/gpr/mpscq.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_MPSCQ_H
-#define GRPC_CORE_LIB_SUPPORT_MPSCQ_H
+#ifndef GRPC_CORE_LIB_GPR_MPSCQ_H
+#define GRPC_CORE_LIB_GPR_MPSCQ_H
 
 #include <grpc/support/atm.h>
 #include <grpc/support/sync.h>
@@ -81,4 +81,4 @@ gpr_mpscq_node* gpr_locked_mpscq_try_pop(gpr_locked_mpscq* q);
 // calling this function
 gpr_mpscq_node* gpr_locked_mpscq_pop(gpr_locked_mpscq* q);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_MPSCQ_H */
+#endif /* GRPC_CORE_LIB_GPR_MPSCQ_H */
diff --git a/src/core/lib/support/murmur_hash.cc b/src/core/lib/gpr/murmur_hash.cc
similarity index 97%
rename from src/core/lib/support/murmur_hash.cc
rename to src/core/lib/gpr/murmur_hash.cc
index 2f0e71a53c9..3f5e04d2119 100644
--- a/src/core/lib/support/murmur_hash.cc
+++ b/src/core/lib/gpr/murmur_hash.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/murmur_hash.h"
+#include "src/core/lib/gpr/murmur_hash.h"
 
 #include <string.h>
 
diff --git a/src/core/lib/support/murmur_hash.h b/src/core/lib/gpr/murmur_hash.h
similarity index 85%
rename from src/core/lib/support/murmur_hash.h
rename to src/core/lib/gpr/murmur_hash.h
index 422770f1035..8004889a9a5 100644
--- a/src/core/lib/support/murmur_hash.h
+++ b/src/core/lib/gpr/murmur_hash.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H
-#define GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H
+#ifndef GRPC_CORE_LIB_GPR_MURMUR_HASH_H
+#define GRPC_CORE_LIB_GPR_MURMUR_HASH_H
 
 #include <grpc/support/port_platform.h>
 
@@ -26,4 +26,4 @@
 /* compute the hash of key (length len) */
 uint32_t gpr_murmur_hash3(const void* key, size_t len, uint32_t seed);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H */
+#endif /* GRPC_CORE_LIB_GPR_MURMUR_HASH_H */
diff --git a/src/core/lib/support/spinlock.h b/src/core/lib/gpr/spinlock.h
similarity index 90%
rename from src/core/lib/support/spinlock.h
rename to src/core/lib/gpr/spinlock.h
index 8b439642e9d..f03be1d7919 100644
--- a/src/core/lib/support/spinlock.h
+++ b/src/core/lib/gpr/spinlock.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_SPINLOCK_H
-#define GRPC_CORE_LIB_SUPPORT_SPINLOCK_H
+#ifndef GRPC_CORE_LIB_GPR_SPINLOCK_H
+#define GRPC_CORE_LIB_GPR_SPINLOCK_H
 
 #include <grpc/support/atm.h>
 
@@ -41,4 +41,4 @@ typedef struct {
   do {                          \
   } while (!gpr_spinlock_trylock((lock)))
 
-#endif /* GRPC_CORE_LIB_SUPPORT_SPINLOCK_H */
+#endif /* GRPC_CORE_LIB_GPR_SPINLOCK_H */
diff --git a/src/core/lib/support/string.cc b/src/core/lib/gpr/string.cc
similarity index 99%
rename from src/core/lib/support/string.cc
rename to src/core/lib/gpr/string.cc
index e31ad72c68f..919d957d1b9 100644
--- a/src/core/lib/support/string.cc
+++ b/src/core/lib/gpr/string.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 #include <ctype.h>
 #include <limits.h>
diff --git a/src/core/lib/support/string.h b/src/core/lib/gpr/string.h
similarity index 96%
rename from src/core/lib/support/string.h
rename to src/core/lib/gpr/string.h
index dd37f0b0e19..ef3a8c6086e 100644
--- a/src/core/lib/support/string.h
+++ b/src/core/lib/gpr/string.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_STRING_H
-#define GRPC_CORE_LIB_SUPPORT_STRING_H
+#ifndef GRPC_CORE_LIB_GPR_STRING_H
+#define GRPC_CORE_LIB_GPR_STRING_H
 
 #include <stdbool.h>
 #include <stddef.h>
@@ -106,4 +106,4 @@ void* gpr_memrchr(const void* s, int c, size_t n);
 /** Return true if lower(s) equals "true", "yes" or "1", otherwise false. */
 bool gpr_is_true(const char* s);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_STRING_H */
+#endif /* GRPC_CORE_LIB_GPR_STRING_H */
diff --git a/src/core/lib/support/string_posix.cc b/src/core/lib/gpr/string_posix.cc
similarity index 100%
rename from src/core/lib/support/string_posix.cc
rename to src/core/lib/gpr/string_posix.cc
diff --git a/src/core/lib/support/string_util_windows.cc b/src/core/lib/gpr/string_util_windows.cc
similarity index 96%
rename from src/core/lib/support/string_util_windows.cc
rename to src/core/lib/gpr/string_util_windows.cc
index e2b386be55c..8c8c99cd211 100644
--- a/src/core/lib/support/string_util_windows.cc
+++ b/src/core/lib/gpr/string_util_windows.cc
@@ -36,8 +36,8 @@
 #include <grpc/support/log_windows.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/string_windows.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/string_windows.h"
 
 #if defined UNICODE || defined _UNICODE
 LPTSTR
diff --git a/src/core/lib/support/string_windows.cc b/src/core/lib/gpr/string_windows.cc
similarity index 97%
rename from src/core/lib/support/string_windows.cc
rename to src/core/lib/gpr/string_windows.cc
index ceb78f00543..25bfd412e44 100644
--- a/src/core/lib/support/string_windows.cc
+++ b/src/core/lib/gpr/string_windows.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 int gpr_asprintf(char** strp, const char* format, ...) {
   va_list args;
diff --git a/src/core/lib/support/string_windows.h b/src/core/lib/gpr/string_windows.h
similarity index 85%
rename from src/core/lib/support/string_windows.h
rename to src/core/lib/gpr/string_windows.h
index 7c7f31e7aaf..e370f802cf9 100644
--- a/src/core/lib/support/string_windows.h
+++ b/src/core/lib/gpr/string_windows.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_STRING_WINDOWS_H
-#define GRPC_CORE_LIB_SUPPORT_STRING_WINDOWS_H
+#ifndef GRPC_CORE_LIB_GPR_STRING_WINDOWS_H
+#define GRPC_CORE_LIB_GPR_STRING_WINDOWS_H
 
 #include <grpc/support/port_platform.h>
 
@@ -29,4 +29,4 @@ LPSTR gpr_tchar_to_char(LPCTSTR input);
 
 #endif /* GPR_WINDOWS */
 
-#endif /* GRPC_CORE_LIB_SUPPORT_STRING_WINDOWS_H */
+#endif /* GRPC_CORE_LIB_GPR_STRING_WINDOWS_H */
diff --git a/src/core/lib/support/subprocess_posix.cc b/src/core/lib/gpr/subprocess_posix.cc
similarity index 100%
rename from src/core/lib/support/subprocess_posix.cc
rename to src/core/lib/gpr/subprocess_posix.cc
diff --git a/src/core/lib/support/subprocess_windows.cc b/src/core/lib/gpr/subprocess_windows.cc
similarity index 97%
rename from src/core/lib/support/subprocess_windows.cc
rename to src/core/lib/gpr/subprocess_windows.cc
index dcdafb5a637..1947d475e34 100644
--- a/src/core/lib/support/subprocess_windows.cc
+++ b/src/core/lib/gpr/subprocess_windows.cc
@@ -27,8 +27,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/string_windows.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/string_windows.h"
 
 struct gpr_subprocess {
   PROCESS_INFORMATION pi;
diff --git a/src/core/lib/support/sync.cc b/src/core/lib/gpr/sync.cc
similarity index 100%
rename from src/core/lib/support/sync.cc
rename to src/core/lib/gpr/sync.cc
diff --git a/src/core/lib/support/sync_posix.cc b/src/core/lib/gpr/sync_posix.cc
similarity index 100%
rename from src/core/lib/support/sync_posix.cc
rename to src/core/lib/gpr/sync_posix.cc
diff --git a/src/core/lib/support/sync_windows.cc b/src/core/lib/gpr/sync_windows.cc
similarity index 100%
rename from src/core/lib/support/sync_windows.cc
rename to src/core/lib/gpr/sync_windows.cc
diff --git a/src/core/lib/support/thd.cc b/src/core/lib/gpr/thd.cc
similarity index 100%
rename from src/core/lib/support/thd.cc
rename to src/core/lib/gpr/thd.cc
diff --git a/src/core/lib/support/thd_internal.h b/src/core/lib/gpr/thd_internal.h
similarity index 85%
rename from src/core/lib/support/thd_internal.h
rename to src/core/lib/gpr/thd_internal.h
index 38bffc847d6..692c00c8e13 100644
--- a/src/core/lib/support/thd_internal.h
+++ b/src/core/lib/gpr/thd_internal.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
-#define GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
+#ifndef GRPC_CORE_LIB_GPR_THD_INTERNAL_H
+#define GRPC_CORE_LIB_GPR_THD_INTERNAL_H
 
 #include <grpc/support/time.h>
 
@@ -27,4 +27,4 @@ void gpr_thd_init();
 /* Wait for all outstanding threads to finish, up to deadline */
 int gpr_await_threads(gpr_timespec deadline);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H */
+#endif /* GRPC_CORE_LIB_GPR_THD_INTERNAL_H */
diff --git a/src/core/lib/support/thd_posix.cc b/src/core/lib/gpr/thd_posix.cc
similarity index 99%
rename from src/core/lib/support/thd_posix.cc
rename to src/core/lib/gpr/thd_posix.cc
index f0ed48dbfc2..cfff0df6dee 100644
--- a/src/core/lib/support/thd_posix.cc
+++ b/src/core/lib/gpr/thd_posix.cc
@@ -31,7 +31,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "src/core/lib/support/fork.h"
+#include "src/core/lib/gpr/fork.h"
 
 static gpr_mu g_mu;
 static gpr_cv g_cv;
diff --git a/src/core/lib/support/thd_windows.cc b/src/core/lib/gpr/thd_windows.cc
similarity index 100%
rename from src/core/lib/support/thd_windows.cc
rename to src/core/lib/gpr/thd_windows.cc
diff --git a/src/core/lib/support/time.cc b/src/core/lib/gpr/time.cc
similarity index 100%
rename from src/core/lib/support/time.cc
rename to src/core/lib/gpr/time.cc
diff --git a/src/core/lib/support/time_posix.cc b/src/core/lib/gpr/time_posix.cc
similarity index 98%
rename from src/core/lib/support/time_posix.cc
rename to src/core/lib/gpr/time_posix.cc
index b2087c93cfe..9c7e86b080b 100644
--- a/src/core/lib/support/time_posix.cc
+++ b/src/core/lib/gpr/time_posix.cc
@@ -17,7 +17,7 @@
  */
 
 #include <grpc/support/port_platform.h>
-#include "src/core/lib/support/time_precise.h"
+#include "src/core/lib/gpr/time_precise.h"
 
 #ifdef GPR_POSIX_TIME
 
diff --git a/src/core/lib/support/time_precise.cc b/src/core/lib/gpr/time_precise.cc
similarity index 97%
rename from src/core/lib/support/time_precise.cc
rename to src/core/lib/gpr/time_precise.cc
index b7372df1b81..3c7aaabc402 100644
--- a/src/core/lib/support/time_precise.cc
+++ b/src/core/lib/gpr/time_precise.cc
@@ -20,7 +20,7 @@
 #include <grpc/support/time.h>
 #include <stdio.h>
 
-#include "src/core/lib/support/time_precise.h"
+#include "src/core/lib/gpr/time_precise.h"
 
 #ifdef GRPC_TIMERS_RDTSC
 #if defined(__i386__)
diff --git a/src/core/lib/support/time_precise.h b/src/core/lib/gpr/time_precise.h
similarity index 83%
rename from src/core/lib/support/time_precise.h
rename to src/core/lib/gpr/time_precise.h
index 35cd154dbdf..acc4ee3d1b5 100644
--- a/src/core/lib/support/time_precise.h
+++ b/src/core/lib/gpr/time_precise.h
@@ -16,12 +16,12 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H
-#define GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H
+#ifndef GRPC_CORE_LIB_GPR_TIME_PRECISE_H
+#define GRPC_CORE_LIB_GPR_TIME_PRECISE_H
 
 #include <grpc/support/time.h>
 
 void gpr_precise_clock_init(void);
 void gpr_precise_clock_now(gpr_timespec* clk);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H */
+#endif /* GRPC_CORE_LIB_GPR_TIME_PRECISE_H */
diff --git a/src/core/lib/support/time_windows.cc b/src/core/lib/gpr/time_windows.cc
similarity index 98%
rename from src/core/lib/support/time_windows.cc
rename to src/core/lib/gpr/time_windows.cc
index fb17e5c079f..247cc164682 100644
--- a/src/core/lib/support/time_windows.cc
+++ b/src/core/lib/gpr/time_windows.cc
@@ -28,7 +28,7 @@
 #include <process.h>
 #include <sys/timeb.h>
 
-#include "src/core/lib/support/time_precise.h"
+#include "src/core/lib/gpr/time_precise.h"
 
 static LARGE_INTEGER g_start_time;
 static double g_time_scale;
diff --git a/src/core/lib/support/tls_pthread.cc b/src/core/lib/gpr/tls_pthread.cc
similarity index 100%
rename from src/core/lib/support/tls_pthread.cc
rename to src/core/lib/gpr/tls_pthread.cc
diff --git a/src/core/lib/support/tmpfile.h b/src/core/lib/gpr/tmpfile.h
similarity index 88%
rename from src/core/lib/support/tmpfile.h
rename to src/core/lib/gpr/tmpfile.h
index c5ceda86751..f47ec7aa637 100644
--- a/src/core/lib/support/tmpfile.h
+++ b/src/core/lib/gpr/tmpfile.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_TMPFILE_H
-#define GRPC_CORE_LIB_SUPPORT_TMPFILE_H
+#ifndef GRPC_CORE_LIB_GPR_TMPFILE_H
+#define GRPC_CORE_LIB_GPR_TMPFILE_H
 
 #include <stdio.h>
 
@@ -27,4 +27,4 @@
    unless an error occurs in which case it will be set to NULL. */
 FILE* gpr_tmpfile(const char* prefix, char** tmp_filename);
 
-#endif /* GRPC_CORE_LIB_SUPPORT_TMPFILE_H */
+#endif /* GRPC_CORE_LIB_GPR_TMPFILE_H */
diff --git a/src/core/lib/support/tmpfile_msys.cc b/src/core/lib/gpr/tmpfile_msys.cc
similarity index 94%
rename from src/core/lib/support/tmpfile_msys.cc
rename to src/core/lib/gpr/tmpfile_msys.cc
index 430e866629f..76cd886f3a0 100644
--- a/src/core/lib/support/tmpfile_msys.cc
+++ b/src/core/lib/gpr/tmpfile_msys.cc
@@ -29,8 +29,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/string_windows.h"
-#include "src/core/lib/support/tmpfile.h"
+#include "src/core/lib/gpr/string_windows.h"
+#include "src/core/lib/gpr/tmpfile.h"
 
 FILE* gpr_tmpfile(const char* prefix, char** tmp_filename_out) {
   FILE* result = NULL;
diff --git a/src/core/lib/support/tmpfile_posix.cc b/src/core/lib/gpr/tmpfile_posix.cc
similarity index 95%
rename from src/core/lib/support/tmpfile_posix.cc
rename to src/core/lib/gpr/tmpfile_posix.cc
index 79c5c688742..ffdad335d67 100644
--- a/src/core/lib/support/tmpfile_posix.cc
+++ b/src/core/lib/gpr/tmpfile_posix.cc
@@ -20,7 +20,7 @@
 
 #ifdef GPR_POSIX_TMPFILE
 
-#include "src/core/lib/support/tmpfile.h"
+#include "src/core/lib/gpr/tmpfile.h"
 
 #include <errno.h>
 #include <stdlib.h>
@@ -31,7 +31,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 FILE* gpr_tmpfile(const char* prefix, char** tmp_filename) {
   FILE* result = nullptr;
diff --git a/src/core/lib/support/tmpfile_windows.cc b/src/core/lib/gpr/tmpfile_windows.cc
similarity index 95%
rename from src/core/lib/support/tmpfile_windows.cc
rename to src/core/lib/gpr/tmpfile_windows.cc
index 2b10bcde437..d4868084189 100644
--- a/src/core/lib/support/tmpfile_windows.cc
+++ b/src/core/lib/gpr/tmpfile_windows.cc
@@ -29,8 +29,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/string_windows.h"
-#include "src/core/lib/support/tmpfile.h"
+#include "src/core/lib/gpr/string_windows.h"
+#include "src/core/lib/gpr/tmpfile.h"
 
 FILE* gpr_tmpfile(const char* prefix, char** tmp_filename_out) {
   FILE* result = NULL;
diff --git a/src/core/lib/support/wrap_memcpy.cc b/src/core/lib/gpr/wrap_memcpy.cc
similarity index 100%
rename from src/core/lib/support/wrap_memcpy.cc
rename to src/core/lib/gpr/wrap_memcpy.cc
diff --git a/src/core/lib/http/format_request.cc b/src/core/lib/http/format_request.cc
index f3f3cbda7b2..473fa71790a 100644
--- a/src/core/lib/http/format_request.cc
+++ b/src/core/lib/http/format_request.cc
@@ -26,7 +26,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 static void fill_common_header(const grpc_httpcli_request* request,
                                gpr_strvec* buf, bool connection_close) {
diff --git a/src/core/lib/http/httpcli.cc b/src/core/lib/http/httpcli.cc
index ed874c4265c..c43c92b57d5 100644
--- a/src/core/lib/http/httpcli.cc
+++ b/src/core/lib/http/httpcli.cc
@@ -26,6 +26,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/format_request.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/endpoint.h"
@@ -34,7 +35,6 @@
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 
 typedef struct {
   grpc_slice request_text;
diff --git a/src/core/lib/http/httpcli_security_connector.cc b/src/core/lib/http/httpcli_security_connector.cc
index bfb536a9211..86644181441 100644
--- a/src/core/lib/http/httpcli_security_connector.cc
+++ b/src/core/lib/http/httpcli_security_connector.cc
@@ -26,9 +26,9 @@
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/transport/security_handshaker.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/tsi/ssl_transport_security.h"
 #include "src/core/tsi/transport_security_adapter.h"
 
diff --git a/src/core/lib/iomgr/call_combiner.h b/src/core/lib/iomgr/call_combiner.h
index 9f7e6ce1c94..4814dbf8d21 100644
--- a/src/core/lib/iomgr/call_combiner.h
+++ b/src/core/lib/iomgr/call_combiner.h
@@ -23,9 +23,9 @@
 
 #include <grpc/support/atm.h>
 
+#include "src/core/lib/gpr/mpscq.h"
 #include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/mpscq.h"
 
 // A simple, lock-free mechanism for serializing activity related to a
 // single call.  This is similar to a combiner but is more lightweight.
diff --git a/src/core/lib/iomgr/closure.h b/src/core/lib/iomgr/closure.h
index 4c58c0e4bf3..249fca6cd6e 100644
--- a/src/core/lib/iomgr/closure.h
+++ b/src/core/lib/iomgr/closure.h
@@ -25,9 +25,9 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <stdbool.h>
+#include "src/core/lib/gpr/mpscq.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/mpscq.h"
 
 struct grpc_closure;
 typedef struct grpc_closure grpc_closure;
diff --git a/src/core/lib/iomgr/combiner.h b/src/core/lib/iomgr/combiner.h
index 46b9ac58be4..c62d21a0513 100644
--- a/src/core/lib/iomgr/combiner.h
+++ b/src/core/lib/iomgr/combiner.h
@@ -23,8 +23,8 @@
 
 #include <grpc/support/atm.h>
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/mpscq.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/mpscq.h"
 
 // Provides serialized access to some resource.
 // Each action queued on a combiner is executed serially in a borrowed thread.
diff --git a/src/core/lib/iomgr/endpoint_pair_posix.cc b/src/core/lib/iomgr/endpoint_pair_posix.cc
index 0b4aefd1b70..3ad6b477561 100644
--- a/src/core/lib/iomgr/endpoint_pair_posix.cc
+++ b/src/core/lib/iomgr/endpoint_pair_posix.cc
@@ -33,8 +33,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/tcp_posix.h"
-#include "src/core/lib/support/string.h"
 
 static void create_sockets(int sv[2]) {
   int flags;
diff --git a/src/core/lib/iomgr/ev_epoll1_linux.cc b/src/core/lib/iomgr/ev_epoll1_linux.cc
index aa14d5931a3..1cb0150f450 100644
--- a/src/core/lib/iomgr/ev_epoll1_linux.cc
+++ b/src/core/lib/iomgr/ev_epoll1_linux.cc
@@ -43,14 +43,14 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/block_annotate.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/lockfree_event.h"
 #include "src/core/lib/iomgr/wakeup_fd_posix.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/manual_constructor.h"
-#include "src/core/lib/support/string.h"
 
 static grpc_wakeup_fd global_wakeup_fd;
 
diff --git a/src/core/lib/iomgr/ev_epollex_linux.cc b/src/core/lib/iomgr/ev_epollex_linux.cc
index e4a2d67e4b4..b81c00ca7aa 100644
--- a/src/core/lib/iomgr/ev_epollex_linux.cc
+++ b/src/core/lib/iomgr/ev_epollex_linux.cc
@@ -41,6 +41,8 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
+#include "src/core/lib/gpr/spinlock.h"
 #include "src/core/lib/iomgr/block_annotate.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/is_epollexclusive_available.h"
@@ -49,8 +51,6 @@
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/iomgr/wakeup_fd_posix.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/manual_constructor.h"
-#include "src/core/lib/support/spinlock.h"
 
 // debug aid: create workers on the heap (allows asan to spot
 // use-after-destruction)
diff --git a/src/core/lib/iomgr/ev_epollsig_linux.cc b/src/core/lib/iomgr/ev_epollsig_linux.cc
index 3544d4f3a4d..11c64d080c7 100644
--- a/src/core/lib/iomgr/ev_epollsig_linux.cc
+++ b/src/core/lib/iomgr/ev_epollsig_linux.cc
@@ -43,6 +43,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
 #include "src/core/lib/iomgr/block_annotate.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
@@ -50,7 +51,6 @@
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/iomgr/wakeup_fd_posix.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/manual_constructor.h"
 
 #define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker*)1)
 
diff --git a/src/core/lib/iomgr/ev_poll_posix.cc b/src/core/lib/iomgr/ev_poll_posix.cc
index 08edff5159b..3b797280559 100644
--- a/src/core/lib/iomgr/ev_poll_posix.cc
+++ b/src/core/lib/iomgr/ev_poll_posix.cc
@@ -38,12 +38,12 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/murmur_hash.h"
 #include "src/core/lib/iomgr/block_annotate.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/wakeup_fd_cv.h"
 #include "src/core/lib/iomgr/wakeup_fd_posix.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/murmur_hash.h"
 
 #define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker*)1)
 
diff --git a/src/core/lib/iomgr/ev_posix.cc b/src/core/lib/iomgr/ev_posix.cc
index b516f93058a..3a5714132d0 100644
--- a/src/core/lib/iomgr/ev_posix.cc
+++ b/src/core/lib/iomgr/ev_posix.cc
@@ -30,11 +30,11 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/ev_epoll1_linux.h"
 #include "src/core/lib/iomgr/ev_epollex_linux.h"
 #include "src/core/lib/iomgr/ev_epollsig_linux.h"
 #include "src/core/lib/iomgr/ev_poll_posix.h"
-#include "src/core/lib/support/env.h"
 
 grpc_core::TraceFlag grpc_polling_trace(false,
                                         "polling"); /* Disabled by default */
diff --git a/src/core/lib/iomgr/executor.cc b/src/core/lib/iomgr/executor.cc
index 67a0412dc38..835dc9d0f7e 100644
--- a/src/core/lib/iomgr/executor.cc
+++ b/src/core/lib/iomgr/executor.cc
@@ -29,8 +29,8 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/spinlock.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/spinlock.h"
 
 #define MAX_DEPTH 2
 
diff --git a/src/core/lib/iomgr/fork_posix.cc b/src/core/lib/iomgr/fork_posix.cc
index cc131408af7..9bfa79219af 100644
--- a/src/core/lib/iomgr/fork_posix.cc
+++ b/src/core/lib/iomgr/fork_posix.cc
@@ -27,13 +27,13 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/fork.h"
+#include "src/core/lib/gpr/thd_internal.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/timer_manager.h"
 #include "src/core/lib/iomgr/wakeup_fd_posix.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/fork.h"
-#include "src/core/lib/support/thd_internal.h"
 #include "src/core/lib/surface/init.h"
 
 /*
diff --git a/src/core/lib/iomgr/iomgr.cc b/src/core/lib/iomgr/iomgr.cc
index 70807c479d7..4cd0a4f1de7 100644
--- a/src/core/lib/iomgr/iomgr.cc
+++ b/src/core/lib/iomgr/iomgr.cc
@@ -31,14 +31,14 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/network_status_tracker.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/iomgr/timer_manager.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 
 static gpr_mu g_mu;
 static gpr_cv g_rcv;
diff --git a/src/core/lib/iomgr/load_file.cc b/src/core/lib/iomgr/load_file.cc
index 4a05de1410c..b6586fbc732 100644
--- a/src/core/lib/iomgr/load_file.cc
+++ b/src/core/lib/iomgr/load_file.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/block_annotate.h"
-#include "src/core/lib/support/string.h"
 
 grpc_error* grpc_load_file(const char* filename, int add_null_terminator,
                            grpc_slice* output) {
diff --git a/src/core/lib/iomgr/resolve_address_posix.cc b/src/core/lib/iomgr/resolve_address_posix.cc
index cc3d4fd7cfa..176caee4907 100644
--- a/src/core/lib/iomgr/resolve_address_posix.cc
+++ b/src/core/lib/iomgr/resolve_address_posix.cc
@@ -33,11 +33,11 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/block_annotate.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
-#include "src/core/lib/support/string.h"
 
 static grpc_error* blocking_resolve_address_impl(
     const char* name, const char* default_port,
diff --git a/src/core/lib/iomgr/resolve_address_windows.cc b/src/core/lib/iomgr/resolve_address_windows.cc
index ccb1dae689c..e44ab396b35 100644
--- a/src/core/lib/iomgr/resolve_address_windows.cc
+++ b/src/core/lib/iomgr/resolve_address_windows.cc
@@ -34,11 +34,11 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/block_annotate.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/string.h"
 
 typedef struct {
   char* name;
diff --git a/src/core/lib/iomgr/sockaddr_utils.cc b/src/core/lib/iomgr/sockaddr_utils.cc
index 0c0a2fe5b2e..71e3e386243 100644
--- a/src/core/lib/iomgr/sockaddr_utils.cc
+++ b/src/core/lib/iomgr/sockaddr_utils.cc
@@ -28,10 +28,10 @@
 #include <grpc/support/port_platform.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/iomgr/socket_utils.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
-#include "src/core/lib/support/string.h"
 
 static const uint8_t kV4MappedPrefix[] = {0, 0, 0, 0, 0,    0,
                                           0, 0, 0, 0, 0xff, 0xff};
diff --git a/src/core/lib/iomgr/socket_utils_common_posix.cc b/src/core/lib/iomgr/socket_utils_common_posix.cc
index 2d4b8f0adda..5068a8081d3 100644
--- a/src/core/lib/iomgr/socket_utils_common_posix.cc
+++ b/src/core/lib/iomgr/socket_utils_common_posix.cc
@@ -40,8 +40,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/sync.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/string.h"
 
 /* set a socket to non blocking mode */
 grpc_error* grpc_set_socket_nonblocking(int fd, int non_blocking) {
diff --git a/src/core/lib/iomgr/tcp_client_posix.cc b/src/core/lib/iomgr/tcp_client_posix.cc
index 8cd5f8d6183..3dff6240654 100644
--- a/src/core/lib/iomgr/tcp_client_posix.cc
+++ b/src/core/lib/iomgr/tcp_client_posix.cc
@@ -33,6 +33,7 @@
 #include <grpc/support/time.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_posix.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
@@ -41,7 +42,6 @@
 #include "src/core/lib/iomgr/tcp_posix.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
-#include "src/core/lib/support/string.h"
 
 extern grpc_core::TraceFlag grpc_tcp_trace;
 
diff --git a/src/core/lib/iomgr/tcp_posix.cc b/src/core/lib/iomgr/tcp_posix.cc
index d47a077251a..0ec5926227c 100644
--- a/src/core/lib/iomgr/tcp_posix.cc
+++ b/src/core/lib/iomgr/tcp_posix.cc
@@ -42,12 +42,12 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/debug/stats.h"
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 #ifdef GRPC_HAVE_MSG_NOSIGNAL
 #define SENDMSG_FLAGS MSG_NOSIGNAL
diff --git a/src/core/lib/iomgr/tcp_server_posix.cc b/src/core/lib/iomgr/tcp_server_posix.cc
index 99e1c6cd069..2fa00a81d2c 100644
--- a/src/core/lib/iomgr/tcp_server_posix.cc
+++ b/src/core/lib/iomgr/tcp_server_posix.cc
@@ -45,6 +45,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
@@ -52,7 +53,6 @@
 #include "src/core/lib/iomgr/tcp_posix.h"
 #include "src/core/lib/iomgr/tcp_server_utils_posix.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
-#include "src/core/lib/support/string.h"
 
 static gpr_once check_init = GPR_ONCE_INIT;
 static bool has_so_reuseport = false;
diff --git a/src/core/lib/iomgr/tcp_uv.cc b/src/core/lib/iomgr/tcp_uv.cc
index baa49d5cc5d..b384623a5e9 100644
--- a/src/core/lib/iomgr/tcp_uv.cc
+++ b/src/core/lib/iomgr/tcp_uv.cc
@@ -29,6 +29,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/iomgr_uv.h"
 #include "src/core/lib/iomgr/network_status_tracker.h"
@@ -36,7 +37,6 @@
 #include "src/core/lib/iomgr/tcp_uv.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 grpc_core::TraceFlag grpc_tcp_trace(false, "tcp");
 
diff --git a/src/core/lib/iomgr/timer_generic.cc b/src/core/lib/iomgr/timer_generic.cc
index 103144eb3bf..177bdec8df1 100644
--- a/src/core/lib/iomgr/timer_generic.cc
+++ b/src/core/lib/iomgr/timer_generic.cc
@@ -32,9 +32,9 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/spinlock.h"
 #include "src/core/lib/iomgr/time_averaged_stats.h"
 #include "src/core/lib/iomgr/timer_heap.h"
-#include "src/core/lib/support/spinlock.h"
 
 #define INVALID_HEAP_INDEX 0xffffffffu
 
diff --git a/src/core/lib/iomgr/udp_server.cc b/src/core/lib/iomgr/udp_server.cc
index 946846a8b87..27d32c59aeb 100644
--- a/src/core/lib/iomgr/udp_server.cc
+++ b/src/core/lib/iomgr/udp_server.cc
@@ -49,6 +49,7 @@
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/executor.h"
@@ -58,7 +59,6 @@
 #include "src/core/lib/iomgr/socket_factory_posix.h"
 #include "src/core/lib/iomgr/socket_utils_posix.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
-#include "src/core/lib/support/string.h"
 
 /* one listening port */
 typedef struct grpc_udp_listener grpc_udp_listener;
diff --git a/src/core/lib/profiling/basic_timers.cc b/src/core/lib/profiling/basic_timers.cc
index 87dd4ab120b..d1c9fd7decb 100644
--- a/src/core/lib/profiling/basic_timers.cc
+++ b/src/core/lib/profiling/basic_timers.cc
@@ -30,7 +30,7 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 
 typedef enum { BEGIN = '{', END = '}', MARK = '.' } marker_type;
 
diff --git a/src/core/lib/security/context/security_context.cc b/src/core/lib/security/context/security_context.cc
index 03710279948..63ec42cf862 100644
--- a/src/core/lib/security/context/security_context.cc
+++ b/src/core/lib/security/context/security_context.cc
@@ -19,8 +19,8 @@
 #include <string.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/context/security_context.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
 
diff --git a/src/core/lib/security/credentials/credentials.cc b/src/core/lib/security/credentials/credentials.cc
index 48b459e1be9..009a5ce4ec3 100644
--- a/src/core/lib/security/credentials/credentials.cc
+++ b/src/core/lib/security/credentials/credentials.cc
@@ -22,11 +22,11 @@
 #include <string.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/httpcli.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/json/json.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
 
 #include <grpc/support/alloc.h>
diff --git a/src/core/lib/security/credentials/fake/fake_credentials.cc b/src/core/lib/security/credentials/fake/fake_credentials.cc
index 99b1214951d..9065325cdd9 100644
--- a/src/core/lib/security/credentials/fake/fake_credentials.cc
+++ b/src/core/lib/security/credentials/fake/fake_credentials.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/executor.h"
-#include "src/core/lib/support/string.h"
 
 /* -- Fake transport security credentials. -- */
 
diff --git a/src/core/lib/security/credentials/google_default/credentials_generic.cc b/src/core/lib/security/credentials/google_default/credentials_generic.cc
index af103f5dc56..15ae9d64280 100644
--- a/src/core/lib/security/credentials/google_default/credentials_generic.cc
+++ b/src/core/lib/security/credentials/google_default/credentials_generic.cc
@@ -22,8 +22,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 
 char* grpc_get_well_known_google_credentials_file_path_impl(void) {
   char* result = nullptr;
diff --git a/src/core/lib/security/credentials/google_default/google_default_credentials.cc b/src/core/lib/security/credentials/google_default/google_default_credentials.cc
index 03d52850d90..dc192020335 100644
--- a/src/core/lib/security/credentials/google_default/google_default_credentials.cc
+++ b/src/core/lib/security/credentials/google_default/google_default_credentials.cc
@@ -24,6 +24,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/httpcli.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/load_file.h"
@@ -33,8 +35,6 @@
 #include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
 
 /* -- Constants. -- */
diff --git a/src/core/lib/security/credentials/jwt/json_token.cc b/src/core/lib/security/credentials/jwt/json_token.cc
index a152ddcaaf6..078f04ed118 100644
--- a/src/core/lib/security/credentials/jwt/json_token.cc
+++ b/src/core/lib/security/credentials/jwt/json_token.cc
@@ -26,9 +26,9 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/util/json_util.h"
 #include "src/core/lib/slice/b64.h"
-#include "src/core/lib/support/string.h"
 
 extern "C" {
 #include <openssl/bio.h>
diff --git a/src/core/lib/security/credentials/jwt/jwt_verifier.cc b/src/core/lib/security/credentials/jwt/jwt_verifier.cc
index 39339f07d73..860506df39b 100644
--- a/src/core/lib/security/credentials/jwt/jwt_verifier.cc
+++ b/src/core/lib/security/credentials/jwt/jwt_verifier.cc
@@ -31,11 +31,11 @@ extern "C" {
 #include <openssl/pem.h>
 }
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/httpcli.h"
 #include "src/core/lib/iomgr/polling_entity.h"
 #include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/tsi/ssl_types.h"
 
 /* --- Utils. --- */
diff --git a/src/core/lib/security/transport/client_auth_filter.cc b/src/core/lib/security/transport/client_auth_filter.cc
index 6d7f89873b3..045cb3e2396 100644
--- a/src/core/lib/security/transport/client_auth_filter.cc
+++ b/src/core/lib/security/transport/client_auth_filter.cc
@@ -25,13 +25,13 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/security/context/security_context.h"
 #include "src/core/lib/security/credentials/credentials.h"
 #include "src/core/lib/security/transport/security_connector.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/transport/static_metadata.h"
 
diff --git a/src/core/lib/security/transport/secure_endpoint.cc b/src/core/lib/security/transport/secure_endpoint.cc
index e5c089de9ca..bd8a6cd76aa 100644
--- a/src/core/lib/security/transport/secure_endpoint.cc
+++ b/src/core/lib/security/transport/secure_endpoint.cc
@@ -28,12 +28,12 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/security/transport/secure_endpoint.h"
 #include "src/core/lib/security/transport/tsi_error.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/tsi/transport_security_grpc.h"
 
 #define STAGING_BUFFER_SIZE 8192
diff --git a/src/core/lib/security/transport/security_connector.cc b/src/core/lib/security/transport/security_connector.cc
index fd139714da2..1d962f94b28 100644
--- a/src/core/lib/security/transport/security_connector.cc
+++ b/src/core/lib/security/transport/security_connector.cc
@@ -30,6 +30,8 @@
 #include "src/core/ext/transport/chttp2/alpn/alpn.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/load_file.h"
 #include "src/core/lib/security/context/security_context.h"
 #include "src/core/lib/security/credentials/credentials.h"
@@ -38,8 +40,6 @@
 #include "src/core/lib/security/transport/lb_targets_info.h"
 #include "src/core/lib/security/transport/secure_endpoint.h"
 #include "src/core/lib/security/transport/security_handshaker.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/tsi/fake_transport_security.h"
 #include "src/core/tsi/ssl_transport_security.h"
 #include "src/core/tsi/transport_security_adapter.h"
diff --git a/src/core/lib/slice/slice_intern.cc b/src/core/lib/slice/slice_intern.cc
index c578c6d9de1..fe1770b92c4 100644
--- a/src/core/lib/slice/slice_intern.cc
+++ b/src/core/lib/slice/slice_intern.cc
@@ -24,10 +24,10 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/gpr/murmur_hash.h"
 #include "src/core/lib/iomgr/iomgr_internal.h" /* for iomgr_abort_on_leaks() */
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/murmur_hash.h"
 #include "src/core/lib/transport/static_metadata.h"
 
 #define LOG2_SHARD_COUNT 5
diff --git a/src/core/lib/slice/slice_string_helpers.cc b/src/core/lib/slice/slice_string_helpers.cc
index 5385be9866b..be0db09252d 100644
--- a/src/core/lib/slice/slice_string_helpers.cc
+++ b/src/core/lib/slice/slice_string_helpers.cc
@@ -22,8 +22,8 @@
 
 #include <grpc/support/log.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 
 char* grpc_dump_slice(grpc_slice s, uint32_t flags) {
   return gpr_dump((const char*)GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s),
diff --git a/src/core/lib/slice/slice_string_helpers.h b/src/core/lib/slice/slice_string_helpers.h
index 7f51b11b9cf..109084be1f7 100644
--- a/src/core/lib/slice/slice_string_helpers.h
+++ b/src/core/lib/slice/slice_string_helpers.h
@@ -26,7 +26,7 @@
 #include <grpc/slice_buffer.h>
 #include <grpc/support/port_platform.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 /* Calls gpr_dump on a slice. */
 char* grpc_dump_slice(grpc_slice slice, uint32_t flags);
diff --git a/src/core/lib/surface/call.cc b/src/core/lib/surface/call.cc
index d677576c145..8a579cabe7d 100644
--- a/src/core/lib/surface/call.cc
+++ b/src/core/lib/surface/call.cc
@@ -33,12 +33,12 @@
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/compression/algorithm_metadata.h"
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/arena.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/arena.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/call_test_only.h"
diff --git a/src/core/lib/surface/call_log_batch.cc b/src/core/lib/surface/call_log_batch.cc
index 535a3d32821..d56ea2a9328 100644
--- a/src/core/lib/surface/call_log_batch.cc
+++ b/src/core/lib/surface/call_log_batch.cc
@@ -22,8 +22,8 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 static void add_metadata(gpr_strvec* b, const grpc_metadata* md, size_t count) {
   size_t i;
diff --git a/src/core/lib/surface/channel.cc b/src/core/lib/surface/channel.cc
index cf5e8c2150d..62db82a1d9e 100644
--- a/src/core/lib/surface/channel.cc
+++ b/src/core/lib/surface/channel.cc
@@ -29,9 +29,9 @@
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/channel_init.h"
diff --git a/src/core/lib/surface/completion_queue.cc b/src/core/lib/surface/completion_queue.cc
index aa5808da4c2..e731e2139fd 100644
--- a/src/core/lib/surface/completion_queue.cc
+++ b/src/core/lib/surface/completion_queue.cc
@@ -31,11 +31,11 @@
 #include <grpc/support/tls.h>
 
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/pollset.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/spinlock.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/event_string.h"
diff --git a/src/core/lib/surface/event_string.cc b/src/core/lib/surface/event_string.cc
index 5168edc9b50..7f40bb2405e 100644
--- a/src/core/lib/surface/event_string.cc
+++ b/src/core/lib/surface/event_string.cc
@@ -22,7 +22,7 @@
 
 #include <grpc/byte_buffer.h>
 #include <grpc/support/string_util.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 static void addhdr(gpr_strvec* buf, grpc_event* ev) {
   char* tmp;
diff --git a/src/core/lib/surface/init.cc b/src/core/lib/surface/init.cc
index 0f40965f16c..70329b09f43 100644
--- a/src/core/lib/surface/init.cc
+++ b/src/core/lib/surface/init.cc
@@ -31,6 +31,8 @@
 #include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/debug/stats.h"
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/fork.h"
+#include "src/core/lib/gpr/thd_internal.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/call_combiner.h"
 #include "src/core/lib/iomgr/combiner.h"
@@ -40,8 +42,6 @@
 #include "src/core/lib/iomgr/timer_manager.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/fork.h"
-#include "src/core/lib/support/thd_internal.h"
 #include "src/core/lib/surface/alarm_internal.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
diff --git a/src/core/lib/surface/lame_client.cc b/src/core/lib/surface/lame_client.cc
index 08611ff730f..27a2a4eeb6f 100644
--- a/src/core/lib/surface/lame_client.cc
+++ b/src/core/lib/surface/lame_client.cc
@@ -23,10 +23,10 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/atomic.h"
+#include "src/core/lib/gpr++/atomic.h"
 
 #include "src/core/lib/channel/channel_stack.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/channel.h"
diff --git a/src/core/lib/surface/server.cc b/src/core/lib/surface/server.cc
index ee98cf2693a..c8c1db337f9 100644
--- a/src/core/lib/surface/server.cc
+++ b/src/core/lib/surface/server.cc
@@ -30,12 +30,12 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
 #include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/mpscq.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/mpscq.h"
-#include "src/core/lib/support/spinlock.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/channel.h"
diff --git a/src/core/lib/transport/metadata.cc b/src/core/lib/transport/metadata.cc
index 5f0673e0142..652222bd0b8 100644
--- a/src/core/lib/transport/metadata.cc
+++ b/src/core/lib/transport/metadata.cc
@@ -31,12 +31,12 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/murmur_hash.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 
 /* There are two kinds of mdelem and mdstr instances.
diff --git a/src/core/lib/transport/service_config.cc b/src/core/lib/transport/service_config.cc
index cbafc338404..5c9930a273f 100644
--- a/src/core/lib/transport/service_config.cc
+++ b/src/core/lib/transport/service_config.cc
@@ -23,11 +23,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/json/json.h"
 #include "src/core/lib/slice/slice_hash_table.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 // The main purpose of the code here is to parse the service config in
 // JSON form, which will look like this:
diff --git a/src/core/lib/transport/timeout_encoding.cc b/src/core/lib/transport/timeout_encoding.cc
index 86db6c83443..47f964af454 100644
--- a/src/core/lib/transport/timeout_encoding.cc
+++ b/src/core/lib/transport/timeout_encoding.cc
@@ -22,7 +22,7 @@
 #include <string.h>
 
 #include <grpc/support/port_platform.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 static int64_t round_up(int64_t x, int64_t divisor) {
   return (x / divisor + (x % divisor != 0)) * divisor;
diff --git a/src/core/lib/transport/timeout_encoding.h b/src/core/lib/transport/timeout_encoding.h
index 8611f49b009..4e9268262e4 100644
--- a/src/core/lib/transport/timeout_encoding.h
+++ b/src/core/lib/transport/timeout_encoding.h
@@ -22,8 +22,8 @@
 #include <grpc/slice.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/string.h"
 
 #define GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE (GPR_LTOA_MIN_BUFSIZE + 1)
 
diff --git a/src/core/lib/transport/transport.cc b/src/core/lib/transport/transport.cc
index 08aee04ac94..ea0380e5912 100644
--- a/src/core/lib/transport/transport.cc
+++ b/src/core/lib/transport/transport.cc
@@ -25,10 +25,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/transport_impl.h"
 
 grpc_core::DebugOnlyTraceFlag grpc_trace_stream_refcount(false,
diff --git a/src/core/lib/transport/transport.h b/src/core/lib/transport/transport.h
index 80a7ff98bef..b392c696cda 100644
--- a/src/core/lib/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@@ -22,12 +22,12 @@
 #include <stddef.h>
 
 #include "src/core/lib/channel/context.h"
+#include "src/core/lib/gpr/arena.h"
 #include "src/core/lib/iomgr/call_combiner.h"
 #include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/polling_entity.h"
 #include "src/core/lib/iomgr/pollset.h"
 #include "src/core/lib/iomgr/pollset_set.h"
-#include "src/core/lib/support/arena.h"
 #include "src/core/lib/transport/byte_stream.h"
 #include "src/core/lib/transport/metadata_batch.h"
 
diff --git a/src/core/lib/transport/transport_op_string.cc b/src/core/lib/transport/transport_op_string.cc
index c0f82fea0dc..58a21e9b608 100644
--- a/src/core/lib/transport/transport_op_string.cc
+++ b/src/core/lib/transport/transport_op_string.cc
@@ -28,8 +28,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/connectivity_state.h"
 
 /* These routines are here to facilitate debugging - they produce string
diff --git a/src/cpp/client/channel_cc.cc b/src/cpp/client/channel_cc.cc
index 08420817c87..362dff642cf 100644
--- a/src/cpp/client/channel_cc.cc
+++ b/src/cpp/client/channel_cc.cc
@@ -42,9 +42,9 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 
 namespace grpc {
 
diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index 6875d40aa08..eb69b5829cd 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 #include <grpc/byte_buffer_reader.h>
 #include <grpc/grpc.h>
diff --git a/src/objective-c/examples/Sample/Podfile b/src/objective-c/examples/Sample/Podfile
index f6f0c00d5d0..9ea2f61927c 100644
--- a/src/objective-c/examples/Sample/Podfile
+++ b/src/objective-c/examples/Sample/Podfile
@@ -40,7 +40,7 @@ pre_install do |installer|
     'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
     'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
     # If we don't set these two settings, `include/grpc/support/time.h` and
-    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # `src/core/lib/gpr/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
     # build.
     'USE_HEADERMAP' => 'NO',
     'ALWAYS_SEARCH_USER_PATHS' => 'NO',
diff --git a/src/objective-c/examples/SwiftSample/Podfile b/src/objective-c/examples/SwiftSample/Podfile
index b08a346ae2a..a2c2b82cc9c 100644
--- a/src/objective-c/examples/SwiftSample/Podfile
+++ b/src/objective-c/examples/SwiftSample/Podfile
@@ -40,7 +40,7 @@ pre_install do |installer|
     'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
     'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
     # If we don't set these two settings, `include/grpc/support/time.h` and
-    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # `src/core/lib/gpr/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
     # build.
     'USE_HEADERMAP' => 'NO',
     'ALWAYS_SEARCH_USER_PATHS' => 'NO',
diff --git a/src/objective-c/tests/Connectivity/Podfile b/src/objective-c/tests/Connectivity/Podfile
index 27ff935c544..cdbc6dde59f 100644
--- a/src/objective-c/tests/Connectivity/Podfile
+++ b/src/objective-c/tests/Connectivity/Podfile
@@ -24,7 +24,7 @@ pre_install do |installer|
     'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
     'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
     # If we don't set these two settings, `include/grpc/support/time.h` and
-    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # `src/core/lib/gpr/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
     # build.
     'USE_HEADERMAP' => 'NO',
     'ALWAYS_SEARCH_USER_PATHS' => 'NO',
diff --git a/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.mm b/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.mm
index d1309713644..16940a49179 100644
--- a/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.mm
+++ b/src/objective-c/tests/CoreCronetEnd2EndTests/CoreCronetEnd2EndTests.mm
@@ -39,9 +39,9 @@
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
index 92bc20e5b92..09ee062596c 100644
--- a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
+++ b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
@@ -31,9 +31,9 @@
 #import <grpc/support/log.h>
 
 #import "src/core/lib/channel/channel_args.h"
-#import "src/core/lib/support/env.h"
-#import "src/core/lib/support/string.h"
-#import "src/core/lib/support/tmpfile.h"
+#import "src/core/lib/gpr/env.h"
+#import "src/core/lib/gpr/string.h"
+#import "src/core/lib/gpr/tmpfile.h"
 #import "test/core/end2end/data/ssl_test_data.h"
 #import "test/core/util/test_config.h"
 
diff --git a/src/objective-c/tests/Podfile b/src/objective-c/tests/Podfile
index 8f1cb041d86..9e9db1fe6ce 100644
--- a/src/objective-c/tests/Podfile
+++ b/src/objective-c/tests/Podfile
@@ -75,7 +75,7 @@ pre_install do |installer|
     'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
     'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
     # If we don't set these two settings, `include/grpc/support/time.h` and
-    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+    # `src/core/lib/gpr/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
     # build.
     'USE_HEADERMAP' => 'NO',
     'ALWAYS_SEARCH_USER_PATHS' => 'NO',
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index aea0786890b..9debb22249d 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -15,50 +15,50 @@
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc_core_dependencies.py.template`!!!
 
 CORE_SOURCE_FILES = [
+    'src/core/lib/gpr/alloc.cc',
+    'src/core/lib/gpr/arena.cc',
+    'src/core/lib/gpr/atm.cc',
+    'src/core/lib/gpr/avl.cc',
+    'src/core/lib/gpr/cmdline.cc',
+    'src/core/lib/gpr/cpu_iphone.cc',
+    'src/core/lib/gpr/cpu_linux.cc',
+    'src/core/lib/gpr/cpu_posix.cc',
+    'src/core/lib/gpr/cpu_windows.cc',
+    'src/core/lib/gpr/env_linux.cc',
+    'src/core/lib/gpr/env_posix.cc',
+    'src/core/lib/gpr/env_windows.cc',
+    'src/core/lib/gpr/fork.cc',
+    'src/core/lib/gpr/host_port.cc',
+    'src/core/lib/gpr/log.cc',
+    'src/core/lib/gpr/log_android.cc',
+    'src/core/lib/gpr/log_linux.cc',
+    'src/core/lib/gpr/log_posix.cc',
+    'src/core/lib/gpr/log_windows.cc',
+    'src/core/lib/gpr/mpscq.cc',
+    'src/core/lib/gpr/murmur_hash.cc',
+    'src/core/lib/gpr/string.cc',
+    'src/core/lib/gpr/string_posix.cc',
+    'src/core/lib/gpr/string_util_windows.cc',
+    'src/core/lib/gpr/string_windows.cc',
+    'src/core/lib/gpr/subprocess_posix.cc',
+    'src/core/lib/gpr/subprocess_windows.cc',
+    'src/core/lib/gpr/sync.cc',
+    'src/core/lib/gpr/sync_posix.cc',
+    'src/core/lib/gpr/sync_windows.cc',
+    'src/core/lib/gpr/thd.cc',
+    'src/core/lib/gpr/thd_posix.cc',
+    'src/core/lib/gpr/thd_windows.cc',
+    'src/core/lib/gpr/time.cc',
+    'src/core/lib/gpr/time_posix.cc',
+    'src/core/lib/gpr/time_precise.cc',
+    'src/core/lib/gpr/time_windows.cc',
+    'src/core/lib/gpr/tls_pthread.cc',
+    'src/core/lib/gpr/tmpfile_msys.cc',
+    'src/core/lib/gpr/tmpfile_posix.cc',
+    'src/core/lib/gpr/tmpfile_windows.cc',
+    'src/core/lib/gpr/wrap_memcpy.cc',
     'src/core/lib/profiling/basic_timers.cc',
     'src/core/lib/profiling/stap_timers.cc',
-    'src/core/lib/support/alloc.cc',
-    'src/core/lib/support/arena.cc',
-    'src/core/lib/support/atm.cc',
-    'src/core/lib/support/avl.cc',
-    'src/core/lib/support/cmdline.cc',
-    'src/core/lib/support/cpu_iphone.cc',
-    'src/core/lib/support/cpu_linux.cc',
-    'src/core/lib/support/cpu_posix.cc',
-    'src/core/lib/support/cpu_windows.cc',
-    'src/core/lib/support/env_linux.cc',
-    'src/core/lib/support/env_posix.cc',
-    'src/core/lib/support/env_windows.cc',
-    'src/core/lib/support/fork.cc',
-    'src/core/lib/support/host_port.cc',
-    'src/core/lib/support/log.cc',
-    'src/core/lib/support/log_android.cc',
-    'src/core/lib/support/log_linux.cc',
-    'src/core/lib/support/log_posix.cc',
-    'src/core/lib/support/log_windows.cc',
-    'src/core/lib/support/mpscq.cc',
-    'src/core/lib/support/murmur_hash.cc',
-    'src/core/lib/support/string.cc',
-    'src/core/lib/support/string_posix.cc',
-    'src/core/lib/support/string_util_windows.cc',
-    'src/core/lib/support/string_windows.cc',
-    'src/core/lib/support/subprocess_posix.cc',
-    'src/core/lib/support/subprocess_windows.cc',
-    'src/core/lib/support/sync.cc',
-    'src/core/lib/support/sync_posix.cc',
-    'src/core/lib/support/sync_windows.cc',
-    'src/core/lib/support/thd.cc',
-    'src/core/lib/support/thd_posix.cc',
-    'src/core/lib/support/thd_windows.cc',
-    'src/core/lib/support/time.cc',
-    'src/core/lib/support/time_posix.cc',
-    'src/core/lib/support/time_precise.cc',
-    'src/core/lib/support/time_windows.cc',
-    'src/core/lib/support/tls_pthread.cc',
-    'src/core/lib/support/tmpfile_msys.cc',
-    'src/core/lib/support/tmpfile_posix.cc',
-    'src/core/lib/support/tmpfile_windows.cc',
-    'src/core/lib/support/wrap_memcpy.cc',
     'src/core/lib/surface/init.cc',
     'src/core/lib/backoff/backoff.cc',
     'src/core/lib/channel/channel_args.cc',
diff --git a/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
index da404e2fefa..2be7692e04c 100644
--- a/templates/gRPC-Core.podspec.template
+++ b/templates/gRPC-Core.podspec.template
@@ -135,7 +135,7 @@
       'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
       'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
       # If we don't set these two settings, `include/grpc/support/time.h` and
-      # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+      # `src/core/lib/gpr/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
       # build.
       'USE_HEADERMAP' => 'NO',
       'ALWAYS_SEARCH_USER_PATHS' => 'NO',
diff --git a/test/core/bad_client/bad_client.cc b/test/core/bad_client/bad_client.cc
index 4c1642aa5d4..dd8d88170e4 100644
--- a/test/core/bad_client/bad_client.cc
+++ b/test/core/bad_client/bad_client.cc
@@ -28,10 +28,10 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/endpoint_pair.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/murmur_hash.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/completion_queue.h"
 #include "src/core/lib/surface/server.h"
 
diff --git a/test/core/bad_client/tests/large_metadata.cc b/test/core/bad_client/tests/large_metadata.cc
index 1ce0f28967c..ff3e9eb932f 100644
--- a/test/core/bad_client/tests/large_metadata.cc
+++ b/test/core/bad_client/tests/large_metadata.cc
@@ -22,7 +22,7 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/cq_verifier.h"
 
diff --git a/test/core/bad_ssl/bad_ssl_test.cc b/test/core/bad_ssl/bad_ssl_test.cc
index 0e74a62f192..8a7960b5edb 100644
--- a/test/core/bad_ssl/bad_ssl_test.cc
+++ b/test/core/bad_ssl/bad_ssl_test.cc
@@ -26,8 +26,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/channel/minimal_stack_is_minimal_test.cc b/test/core/channel/minimal_stack_is_minimal_test.cc
index 3495f603e4f..f02c8180f20 100644
--- a/test/core/channel/minimal_stack_is_minimal_test.cc
+++ b/test/core/channel/minimal_stack_is_minimal_test.cc
@@ -35,7 +35,7 @@
 #include <string.h>
 
 #include "src/core/lib/channel/channel_stack_builder.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/surface/channel_stack_type.h"
 #include "src/core/lib/transport/transport_impl.h"
diff --git a/test/core/client_channel/lb_policies_test.cc b/test/core/client_channel/lb_policies_test.cc
index 847ea0066ba..716c63b9d0e 100644
--- a/test/core/client_channel/lb_policies_test.cc
+++ b/test/core/client_channel/lb_policies_test.cc
@@ -30,7 +30,7 @@
 #include "src/core/ext/filters/client_channel/lb_policy_registry.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/channel_stack.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/cq_verifier.h"
diff --git a/test/core/compression/message_compress_test.cc b/test/core/compression/message_compress_test.cc
index 6ca07b70c4f..b03ca4c4cbb 100644
--- a/test/core/compression/message_compress_test.cc
+++ b/test/core/compression/message_compress_test.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/murmur_hash.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/murmur_hash.h"
 #include "test/core/util/slice_splitter.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/end2end/bad_server_response_test.cc b/test/core/end2end/bad_server_response_test.cc
index 93809ac37a6..a8e5e291c8d 100644
--- a/test/core/end2end/bad_server_response_test.cc
+++ b/test/core/end2end/bad_server_response_test.cc
@@ -31,10 +31,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/thd.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/end2end/cq_verifier.cc b/test/core/end2end/cq_verifier.cc
index 8686f4e7b74..7bf8ae0f6eb 100644
--- a/test/core/end2end/cq_verifier.cc
+++ b/test/core/end2end/cq_verifier.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/event_string.h"
 
 #define ROOT_EXPECTATION 1000
diff --git a/test/core/end2end/dualstack_socket_test.cc b/test/core/end2end/dualstack_socket_test.cc
index 04c727e689a..bb30547cd22 100644
--- a/test/core/end2end/dualstack_socket_test.cc
+++ b/test/core/end2end/dualstack_socket_test.cc
@@ -29,12 +29,12 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/socket_utils_posix.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/end2end/fixtures/h2_full+trace.cc b/test/core/end2end/fixtures/h2_full+trace.cc
index a49de96009c..7104fbc581e 100644
--- a/test/core/end2end/fixtures/h2_full+trace.cc
+++ b/test/core/end2end/fixtures/h2_full+trace.cc
@@ -35,7 +35,7 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/fixtures/h2_http_proxy.cc b/test/core/end2end/fixtures/h2_http_proxy.cc
index 099367d91b8..e8e81f09304 100644
--- a/test/core/end2end/fixtures/h2_http_proxy.cc
+++ b/test/core/end2end/fixtures/h2_http_proxy.cc
@@ -31,7 +31,7 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/fixtures/http_proxy_fixture.h"
diff --git a/test/core/end2end/fixtures/h2_sockpair+trace.cc b/test/core/end2end/fixtures/h2_sockpair+trace.cc
index 9807e929af6..236780b8d38 100644
--- a/test/core/end2end/fixtures/h2_sockpair+trace.cc
+++ b/test/core/end2end/fixtures/h2_sockpair+trace.cc
@@ -36,9 +36,9 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/endpoint_pair.h"
 #include "src/core/lib/iomgr/iomgr.h"
-#include "src/core/lib/support/env.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/completion_queue.h"
 #include "src/core/lib/surface/server.h"
diff --git a/test/core/end2end/fixtures/h2_ssl.cc b/test/core/end2end/fixtures/h2_ssl.cc
index 9a0680c40ef..8c5c8a2f3fa 100644
--- a/test/core/end2end/fixtures/h2_ssl.cc
+++ b/test/core/end2end/fixtures/h2_ssl.cc
@@ -26,10 +26,10 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/end2end/fixtures/h2_ssl_proxy.cc b/test/core/end2end/fixtures/h2_ssl_proxy.cc
index 5ddbdefc8c3..3f0646cf0fd 100644
--- a/test/core/end2end/fixtures/h2_ssl_proxy.cc
+++ b/test/core/end2end/fixtures/h2_ssl_proxy.cc
@@ -26,10 +26,10 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/end2end/fixtures/proxy.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/fixtures/h2_uds.cc b/test/core/end2end/fixtures/h2_uds.cc
index 28f0a50e153..1944dd84a37 100644
--- a/test/core/end2end/fixtures/h2_uds.cc
+++ b/test/core/end2end/fixtures/h2_uds.cc
@@ -33,7 +33,7 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/fixtures/http_proxy_fixture.cc b/test/core/end2end/fixtures/http_proxy_fixture.cc
index 137f7c9fa37..8ec97df3e41 100644
--- a/test/core/end2end/fixtures/http_proxy_fixture.cc
+++ b/test/core/end2end/fixtures/http_proxy_fixture.cc
@@ -34,6 +34,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/combiner.h"
@@ -49,7 +50,6 @@
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/port.h"
 
 struct grpc_end2end_http_proxy {
diff --git a/test/core/end2end/fuzzers/api_fuzzer.cc b/test/core/end2end/fuzzers/api_fuzzer.cc
index 43c9fa19c6d..14c155502a5 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.cc
+++ b/test/core/end2end/fuzzers/api_fuzzer.cc
@@ -28,13 +28,13 @@
 #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/iomgr/timer_manager.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/env.h"
 #include "src/core/lib/surface/server.h"
 #include "src/core/lib/transport/metadata.h"
 #include "test/core/end2end/data/ssl_test_data.h"
diff --git a/test/core/end2end/h2_ssl_cert_test.cc b/test/core/end2end/h2_ssl_cert_test.cc
index d50d1f4d81e..3383d6d5d1b 100644
--- a/test/core/end2end/h2_ssl_cert_test.cc
+++ b/test/core/end2end/h2_ssl_cert_test.cc
@@ -26,10 +26,10 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/tests/bad_hostname.cc b/test/core/end2end/tests/bad_hostname.cc
index 97ef62b5e34..85e9ba1307a 100644
--- a/test/core/end2end/tests/bad_hostname.cc
+++ b/test/core/end2end/tests/bad_hostname.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/call_creds.cc b/test/core/end2end/tests/call_creds.cc
index e1c868232c2..c5ea101c53d 100644
--- a/test/core/end2end/tests/call_creds.cc
+++ b/test/core/end2end/tests/call_creds.cc
@@ -27,8 +27,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static const char iam_token[] = "token";
diff --git a/test/core/end2end/tests/cancel_with_status.cc b/test/core/end2end/tests/cancel_with_status.cc
index c867751d531..7937fd161f2 100644
--- a/test/core/end2end/tests/cancel_with_status.cc
+++ b/test/core/end2end/tests/cancel_with_status.cc
@@ -28,7 +28,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/default_host.cc b/test/core/end2end/tests/default_host.cc
index 85f92b0ab07..7c944205401 100644
--- a/test/core/end2end/tests/default_host.cc
+++ b/test/core/end2end/tests/default_host.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/empty_batch.cc b/test/core/end2end/tests/empty_batch.cc
index b249c141dec..c41e65ddd2c 100644
--- a/test/core/end2end/tests/empty_batch.cc
+++ b/test/core/end2end/tests/empty_batch.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/high_initial_seqno.cc b/test/core/end2end/tests/high_initial_seqno.cc
index d390a954e5c..d4d4f5a817f 100644
--- a/test/core/end2end/tests/high_initial_seqno.cc
+++ b/test/core/end2end/tests/high_initial_seqno.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/hpack_size.cc b/test/core/end2end/tests/hpack_size.cc
index 7ac5fefa229..0d6ec01e36c 100644
--- a/test/core/end2end/tests/hpack_size.cc
+++ b/test/core/end2end/tests/hpack_size.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/idempotent_request.cc b/test/core/end2end/tests/idempotent_request.cc
index e39975382ad..7487e4d83df 100644
--- a/test/core/end2end/tests/idempotent_request.cc
+++ b/test/core/end2end/tests/idempotent_request.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/keepalive_timeout.cc b/test/core/end2end/tests/keepalive_timeout.cc
index 822565510f3..6482b868258 100644
--- a/test/core/end2end/tests/keepalive_timeout.cc
+++ b/test/core/end2end/tests/keepalive_timeout.cc
@@ -28,8 +28,8 @@
 #include <grpc/support/useful.h>
 #include "src/core/ext/transport/chttp2/transport/frame_ping.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/env.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/negative_deadline.cc b/test/core/end2end/tests/negative_deadline.cc
index b793964b482..b752bf9482d 100644
--- a/test/core/end2end/tests/negative_deadline.cc
+++ b/test/core/end2end/tests/negative_deadline.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/no_logging.cc b/test/core/end2end/tests/no_logging.cc
index bf8651221a6..d89918bd3e1 100644
--- a/test/core/end2end/tests/no_logging.cc
+++ b/test/core/end2end/tests/no_logging.cc
@@ -28,8 +28,8 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 enum { TIMEOUT = 200000 };
diff --git a/test/core/end2end/tests/proxy_auth.cc b/test/core/end2end/tests/proxy_auth.cc
index e4b91ab8798..495151b592b 100644
--- a/test/core/end2end/tests/proxy_auth.cc
+++ b/test/core/end2end/tests/proxy_auth.cc
@@ -32,7 +32,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/registered_call.cc b/test/core/end2end/tests/registered_call.cc
index 440d817cf13..cefa89db4db 100644
--- a/test/core/end2end/tests/registered_call.cc
+++ b/test/core/end2end/tests/registered_call.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/server_finishes_request.cc b/test/core/end2end/tests/server_finishes_request.cc
index 46b874b5697..743b3aeb911 100644
--- a/test/core/end2end/tests/server_finishes_request.cc
+++ b/test/core/end2end/tests/server_finishes_request.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/simple_request.cc b/test/core/end2end/tests/simple_request.cc
index 7eb74679816..ae93f79c9d6 100644
--- a/test/core/end2end/tests/simple_request.cc
+++ b/test/core/end2end/tests/simple_request.cc
@@ -28,7 +28,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 #include "src/core/lib/debug/stats.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/fling/fling_stream_test.cc b/test/core/fling/fling_stream_test.cc
index b476f2e128e..b5a5ce816e6 100644
--- a/test/core/fling/fling_stream_test.cc
+++ b/test/core/fling/fling_stream_test.cc
@@ -23,7 +23,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/port.h"
 
 int main(int argc, char** argv) {
diff --git a/test/core/fling/fling_test.cc b/test/core/fling/fling_test.cc
index 0e8b3c10282..3792e45c429 100644
--- a/test/core/fling/fling_test.cc
+++ b/test/core/fling/fling_test.cc
@@ -23,7 +23,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/port.h"
 
 int main(int argc, const char** argv) {
diff --git a/test/core/gpr++/BUILD b/test/core/gpr++/BUILD
new file mode 100644
index 00000000000..93324a378b2
--- /dev/null
+++ b/test/core/gpr++/BUILD
@@ -0,0 +1,95 @@
+# Copyright 2016 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
+
+licenses(["notice"])  # Apache v2
+
+grpc_package(name = "test/core/gpr++")
+
+grpc_cc_test(
+    name = "manual_constructor_test",
+    srcs = ["manual_constructor_test.cc"],
+    language = "C++",
+    deps = [
+        "//:gpr",
+        "//test/core/util:gpr_test_util",
+    ],
+)
+
+grpc_cc_test(
+    name = "memory_test",
+    srcs = ["memory_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
+    language = "C++",
+    deps = [
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+    ],
+)
+
+grpc_cc_test(
+    name = "inlined_vector_test",
+    srcs = ["inlined_vector_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
+    language = "C++",
+    deps = [
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+    ],
+)
+
+grpc_cc_test(
+    name = "orphanable_test",
+    srcs = ["orphanable_test.cc"],
+    language = "C++",
+    deps = [
+        "//:orphanable",
+        "//test/core/util:gpr_test_util",
+    ],
+    external_deps = [
+        "gtest",
+    ],
+)
+
+grpc_cc_test(
+    name = "ref_counted_test",
+    srcs = ["ref_counted_test.cc"],
+    language = "C++",
+    deps = [
+        "//:ref_counted",
+        "//test/core/util:gpr_test_util",
+    ],
+    external_deps = [
+        "gtest",
+    ],
+)
+
+grpc_cc_test(
+    name = "ref_counted_ptr_test",
+    srcs = ["ref_counted_ptr_test.cc"],
+    language = "C++",
+    deps = [
+        "//:ref_counted",
+        "//:ref_counted_ptr",
+        "//test/core/util:gpr_test_util",
+    ],
+    external_deps = [
+        "gtest",
+    ],
+)
diff --git a/test/core/support/vector_test.cc b/test/core/gpr++/inlined_vector_test.cc
similarity index 95%
rename from test/core/support/vector_test.cc
rename to test/core/gpr++/inlined_vector_test.cc
index 82607a1b260..09d5453a56a 100644
--- a/test/core/support/vector_test.cc
+++ b/test/core/gpr++/inlined_vector_test.cc
@@ -16,9 +16,9 @@
  *
  */
 
-#include "src/core/lib/support/vector.h"
+#include "src/core/lib/gpr++/inlined_vector.h"
 #include <gtest/gtest.h>
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
diff --git a/test/core/support/manual_constructor_test.cc b/test/core/gpr++/manual_constructor_test.cc
similarity index 96%
rename from test/core/support/manual_constructor_test.cc
rename to test/core/gpr++/manual_constructor_test.cc
index 714f8b21a01..e049b793f61 100644
--- a/test/core/support/manual_constructor_test.cc
+++ b/test/core/gpr++/manual_constructor_test.cc
@@ -18,7 +18,7 @@
 
 /* Test of gpr synchronization support. */
 
-#include "src/core/lib/support/manual_constructor.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
@@ -26,7 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <cstring>
-#include "src/core/lib/support/abstract.h"
+#include "src/core/lib/gpr++/abstract.h"
 #include "test/core/util/test_config.h"
 
 class A {
diff --git a/test/core/support/memory_test.cc b/test/core/gpr++/memory_test.cc
similarity index 97%
rename from test/core/support/memory_test.cc
rename to test/core/gpr++/memory_test.cc
index 79ab631a78d..3553e119e3b 100644
--- a/test/core/support/memory_test.cc
+++ b/test/core/gpr++/memory_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 #include <gtest/gtest.h>
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/support/orphanable_test.cc b/test/core/gpr++/orphanable_test.cc
similarity index 96%
rename from test/core/support/orphanable_test.cc
rename to test/core/gpr++/orphanable_test.cc
index e07017ab1ed..4513d25da17 100644
--- a/test/core/support/orphanable_test.cc
+++ b/test/core/gpr++/orphanable_test.cc
@@ -16,11 +16,11 @@
  *
  */
 
-#include "src/core/lib/support/orphanable.h"
+#include "src/core/lib/gpr++/orphanable.h"
 
 #include <gtest/gtest.h>
 
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
diff --git a/test/core/support/ref_counted_ptr_test.cc b/test/core/gpr++/ref_counted_ptr_test.cc
similarity index 97%
rename from test/core/support/ref_counted_ptr_test.cc
rename to test/core/gpr++/ref_counted_ptr_test.cc
index ce4975d3477..e897b2859c8 100644
--- a/test/core/support/ref_counted_ptr_test.cc
+++ b/test/core/gpr++/ref_counted_ptr_test.cc
@@ -16,14 +16,14 @@
  *
  */
 
-#include "src/core/lib/support/ref_counted_ptr.h"
+#include "src/core/lib/gpr++/ref_counted_ptr.h"
 
 #include <gtest/gtest.h>
 
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/memory.h"
-#include "src/core/lib/support/ref_counted.h"
+#include "src/core/lib/gpr++/memory.h"
+#include "src/core/lib/gpr++/ref_counted.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
diff --git a/test/core/support/ref_counted_test.cc b/test/core/gpr++/ref_counted_test.cc
similarity index 95%
rename from test/core/support/ref_counted_test.cc
rename to test/core/gpr++/ref_counted_test.cc
index 0629e3ff5fd..568ec51c64a 100644
--- a/test/core/support/ref_counted_test.cc
+++ b/test/core/gpr++/ref_counted_test.cc
@@ -16,11 +16,11 @@
  *
  */
 
-#include "src/core/lib/support/ref_counted.h"
+#include "src/core/lib/gpr++/ref_counted.h"
 
 #include <gtest/gtest.h>
 
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
diff --git a/test/core/support/BUILD b/test/core/gpr/BUILD
similarity index 70%
rename from test/core/support/BUILD
rename to test/core/gpr/BUILD
index c8fa046da1d..1be1036d041 100644
--- a/test/core/support/BUILD
+++ b/test/core/gpr/BUILD
@@ -16,7 +16,7 @@ load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_c
 
 licenses(["notice"])  # Apache v2
 
-grpc_package(name = "test/core/support")
+grpc_package(name = "test/core/gpr")
 
 grpc_cc_test(
     name = "alloc_test",
@@ -118,16 +118,6 @@ grpc_cc_test(
     ],
 )
 
-grpc_cc_test(
-    name = "manual_constructor_test",
-    srcs = ["manual_constructor_test.cc"],
-    language = "C++",
-    deps = [
-        "//:gpr",
-        "//test/core/util:gpr_test_util",
-    ],
-)
-
 grpc_cc_test(
     name = "spinlock_test",
     srcs = ["spinlock_test.cc"],
@@ -187,69 +177,3 @@ grpc_cc_test(
         "//test/core/util:gpr_test_util",
     ],
 )
-
-grpc_cc_test(
-    name = "memory_test",
-    srcs = ["memory_test.cc"],
-    external_deps = [
-        "gtest",
-    ],
-    language = "C++",
-    deps = [
-        "//:grpc",
-        "//test/core/util:gpr_test_util",
-    ],
-)
-
-grpc_cc_test(
-    name = "vector_test",
-    srcs = ["vector_test.cc"],
-    external_deps = [
-        "gtest",
-    ],
-    language = "C++",
-    deps = [
-        "//:grpc",
-        "//test/core/util:gpr_test_util",
-    ],
-)
-
-grpc_cc_test(
-    name = "orphanable_test",
-    srcs = ["orphanable_test.cc"],
-    language = "C++",
-    deps = [
-        "//:orphanable",
-        "//test/core/util:gpr_test_util",
-    ],
-    external_deps = [
-        "gtest",
-    ],
-)
-
-grpc_cc_test(
-    name = "ref_counted_test",
-    srcs = ["ref_counted_test.cc"],
-    language = "C++",
-    deps = [
-        "//:ref_counted",
-        "//test/core/util:gpr_test_util",
-    ],
-    external_deps = [
-        "gtest",
-    ],
-)
-
-grpc_cc_test(
-    name = "ref_counted_ptr_test",
-    srcs = ["ref_counted_ptr_test.cc"],
-    language = "C++",
-    deps = [
-        "//:ref_counted",
-        "//:ref_counted_ptr",
-        "//test/core/util:gpr_test_util",
-    ],
-    external_deps = [
-        "gtest",
-    ],
-)
diff --git a/test/core/support/alloc_test.cc b/test/core/gpr/alloc_test.cc
similarity index 100%
rename from test/core/support/alloc_test.cc
rename to test/core/gpr/alloc_test.cc
diff --git a/test/core/support/arena_test.cc b/test/core/gpr/arena_test.cc
similarity index 97%
rename from test/core/support/arena_test.cc
rename to test/core/gpr/arena_test.cc
index ada0f438542..59ea04c0edb 100644
--- a/test/core/support/arena_test.cc
+++ b/test/core/gpr/arena_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/arena.h"
+#include "src/core/lib/gpr/arena.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -27,7 +27,7 @@
 #include <inttypes.h>
 #include <string.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 static void test_noop(void) { gpr_arena_destroy(gpr_arena_create(1)); }
diff --git a/test/core/support/avl_test.cc b/test/core/gpr/avl_test.cc
similarity index 100%
rename from test/core/support/avl_test.cc
rename to test/core/gpr/avl_test.cc
diff --git a/test/core/support/cmdline_test.cc b/test/core/gpr/cmdline_test.cc
similarity index 100%
rename from test/core/support/cmdline_test.cc
rename to test/core/gpr/cmdline_test.cc
diff --git a/test/core/support/cpu_test.cc b/test/core/gpr/cpu_test.cc
similarity index 100%
rename from test/core/support/cpu_test.cc
rename to test/core/gpr/cpu_test.cc
diff --git a/test/core/support/env_test.cc b/test/core/gpr/env_test.cc
similarity index 94%
rename from test/core/support/env_test.cc
rename to test/core/gpr/env_test.cc
index b12c04d06fb..3f4b4932394 100644
--- a/test/core/support/env_test.cc
+++ b/test/core/gpr/env_test.cc
@@ -22,8 +22,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/support/host_port_test.cc b/test/core/gpr/host_port_test.cc
similarity index 100%
rename from test/core/support/host_port_test.cc
rename to test/core/gpr/host_port_test.cc
diff --git a/test/core/support/log_test.cc b/test/core/gpr/log_test.cc
similarity index 98%
rename from test/core/support/log_test.cc
rename to test/core/gpr/log_test.cc
index 7dba35c13ee..839ff0aef94 100644
--- a/test/core/support/log_test.cc
+++ b/test/core/gpr/log_test.cc
@@ -21,7 +21,7 @@
 #include <stdbool.h>
 #include <string.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "test/core/util/test_config.h"
 
 static bool log_func_reached = false;
diff --git a/test/core/support/mpscq_test.cc b/test/core/gpr/mpscq_test.cc
similarity index 99%
rename from test/core/support/mpscq_test.cc
rename to test/core/gpr/mpscq_test.cc
index 1b83f7d5be9..5a8177543c9 100644
--- a/test/core/support/mpscq_test.cc
+++ b/test/core/gpr/mpscq_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/mpscq.h"
+#include "src/core/lib/gpr/mpscq.h"
 
 #include <stdlib.h>
 
diff --git a/test/core/support/murmur_hash_test.cc b/test/core/gpr/murmur_hash_test.cc
similarity index 97%
rename from test/core/support/murmur_hash_test.cc
rename to test/core/gpr/murmur_hash_test.cc
index 461c728951c..d920dd3f95d 100644
--- a/test/core/support/murmur_hash_test.cc
+++ b/test/core/gpr/murmur_hash_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/murmur_hash.h"
+#include "src/core/lib/gpr/murmur_hash.h"
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include "test/core/util/test_config.h"
diff --git a/test/core/support/spinlock_test.cc b/test/core/gpr/spinlock_test.cc
similarity index 99%
rename from test/core/support/spinlock_test.cc
rename to test/core/gpr/spinlock_test.cc
index ea0dbbf7c6b..77e3dfbede5 100644
--- a/test/core/support/spinlock_test.cc
+++ b/test/core/gpr/spinlock_test.cc
@@ -18,7 +18,7 @@
 
 /* Test of gpr synchronization support. */
 
-#include "src/core/lib/support/spinlock.h"
+#include "src/core/lib/gpr/spinlock.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
diff --git a/test/core/support/string_test.cc b/test/core/gpr/string_test.cc
similarity index 99%
rename from test/core/support/string_test.cc
rename to test/core/gpr/string_test.cc
index fd7f7cde59e..57068eb2c99 100644
--- a/test/core/support/string_test.cc
+++ b/test/core/gpr/string_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 #include <limits.h>
 #include <stddef.h>
diff --git a/test/core/support/sync_test.cc b/test/core/gpr/sync_test.cc
similarity index 100%
rename from test/core/support/sync_test.cc
rename to test/core/gpr/sync_test.cc
diff --git a/test/core/support/thd_test.cc b/test/core/gpr/thd_test.cc
similarity index 100%
rename from test/core/support/thd_test.cc
rename to test/core/gpr/thd_test.cc
diff --git a/test/core/support/time_test.cc b/test/core/gpr/time_test.cc
similarity index 100%
rename from test/core/support/time_test.cc
rename to test/core/gpr/time_test.cc
diff --git a/test/core/support/tls_test.cc b/test/core/gpr/tls_test.cc
similarity index 100%
rename from test/core/support/tls_test.cc
rename to test/core/gpr/tls_test.cc
diff --git a/test/core/support/useful_test.cc b/test/core/gpr/useful_test.cc
similarity index 100%
rename from test/core/support/useful_test.cc
rename to test/core/gpr/useful_test.cc
diff --git a/test/core/iomgr/load_file_test.cc b/test/core/iomgr/load_file_test.cc
index 797d0ef1a4d..38c8710535b 100644
--- a/test/core/iomgr/load_file_test.cc
+++ b/test/core/iomgr/load_file_test.cc
@@ -24,9 +24,9 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/iomgr/load_file.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/iomgr/wakeup_fd_cv_test.cc b/test/core/iomgr/wakeup_fd_cv_test.cc
index d4e05bd7ef8..c092a8f3bf9 100644
--- a/test/core/iomgr/wakeup_fd_cv_test.cc
+++ b/test/core/iomgr/wakeup_fd_cv_test.cc
@@ -27,9 +27,9 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_posix.h"
-#include "src/core/lib/support/env.h"
 
 typedef struct poll_args {
   struct pollfd* fds;
diff --git a/test/core/json/json_test.cc b/test/core/json/json_test.cc
index 18b9c55ee79..902f1cd90ee 100644
--- a/test/core/json/json_test.cc
+++ b/test/core/json/json_test.cc
@@ -22,8 +22,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/json/json.h"
-#include "src/core/lib/support/string.h"
 
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/memory_usage/client.cc b/test/core/memory_usage/client.cc
index eb90067970d..ca841434aa8 100644
--- a/test/core/memory_usage/client.cc
+++ b/test/core/memory_usage/client.cc
@@ -28,8 +28,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/memory_counters.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/memory_usage/memory_usage_test.cc b/test/core/memory_usage/memory_usage_test.cc
index 58e31c95319..fb6d290130f 100644
--- a/test/core/memory_usage/memory_usage_test.cc
+++ b/test/core/memory_usage/memory_usage_test.cc
@@ -23,7 +23,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/port.h"
 
 int main(int argc, char** argv) {
diff --git a/test/core/security/auth_context_test.cc b/test/core/security/auth_context_test.cc
index d8e41326c00..58f0d8e1c27 100644
--- a/test/core/security/auth_context_test.cc
+++ b/test/core/security/auth_context_test.cc
@@ -18,8 +18,8 @@
 
 #include <string.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/context/security_context.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/test_config.h"
 
 #include <grpc/support/log.h>
diff --git a/test/core/security/credentials_test.cc b/test/core/security/credentials_test.cc
index ecc61928f59..90310469aa7 100644
--- a/test/core/security/credentials_test.cc
+++ b/test/core/security/credentials_test.cc
@@ -31,6 +31,9 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/http/httpcli.h"
 #include "src/core/lib/security/credentials/composite/composite_credentials.h"
 #include "src/core/lib/security/credentials/fake/fake_credentials.h"
@@ -38,9 +41,6 @@
 #include "src/core/lib/security/credentials/jwt/jwt_credentials.h"
 #include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
 #include "src/core/lib/security/transport/auth_filters.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/util/test_config.h"
 
 /* -- Mock channel credentials. -- */
diff --git a/test/core/security/print_google_default_creds_token.cc b/test/core/security/print_google_default_creds_token.cc
index d71116d8f6a..a90f997bda0 100644
--- a/test/core/security/print_google_default_creds_token.cc
+++ b/test/core/security/print_google_default_creds_token.cc
@@ -27,10 +27,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/credentials/composite/composite_credentials.h"
 #include "src/core/lib/security/credentials/credentials.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 typedef struct {
   gpr_mu* mu;
diff --git a/test/core/security/security_connector_test.cc b/test/core/security/security_connector_test.cc
index 9a68e176dbc..6eaef2bf49b 100644
--- a/test/core/security/security_connector_test.cc
+++ b/test/core/security/security_connector_test.cc
@@ -25,12 +25,12 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/context/security_context.h"
 #include "src/core/lib/security/transport/security_connector.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "src/core/tsi/ssl_transport_security.h"
 #include "src/core/tsi/transport_security.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/slice/percent_encoding_test.cc b/test/core/slice/percent_encoding_test.cc
index 11f3995f98e..e8d04fcc83c 100644
--- a/test/core/slice/percent_encoding_test.cc
+++ b/test/core/slice/percent_encoding_test.cc
@@ -22,8 +22,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/test_config.h"
 
 #define TEST_VECTOR(raw, encoded, dict) \
diff --git a/test/core/slice/slice_string_helpers_test.cc b/test/core/slice/slice_string_helpers_test.cc
index f1d470461a4..a443f17c692 100644
--- a/test/core/slice/slice_string_helpers_test.cc
+++ b/test/core/slice/slice_string_helpers_test.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/transport/bdp_estimator_test.cc b/test/core/transport/bdp_estimator_test.cc
index 445823b628b..3afcad7f17d 100644
--- a/test/core/transport/bdp_estimator_test.cc
+++ b/test/core/transport/bdp_estimator_test.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/useful.h>
 #include <gtest/gtest.h>
 #include <limits.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/timer_manager.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/test_config.h"
 
 extern gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type);
diff --git a/test/core/transport/chttp2/bin_decoder_test.cc b/test/core/transport/chttp2/bin_decoder_test.cc
index 6d70a4261b0..283eebbacf5 100644
--- a/test/core/transport/chttp2/bin_decoder_test.cc
+++ b/test/core/transport/chttp2/bin_decoder_test.cc
@@ -24,9 +24,9 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 static int all_ok = 1;
 
diff --git a/test/core/transport/chttp2/bin_encoder_test.cc b/test/core/transport/chttp2/bin_encoder_test.cc
index 44f5de8a50d..bd62b0e479a 100644
--- a/test/core/transport/chttp2/bin_encoder_test.cc
+++ b/test/core/transport/chttp2/bin_encoder_test.cc
@@ -26,8 +26,8 @@
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 static int all_ok = 1;
 
diff --git a/test/core/transport/chttp2/hpack_encoder_test.cc b/test/core/transport/chttp2/hpack_encoder_test.cc
index d2dbd4a7986..a40bd643ecc 100644
--- a/test/core/transport/chttp2/hpack_encoder_test.cc
+++ b/test/core/transport/chttp2/hpack_encoder_test.cc
@@ -26,9 +26,9 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/metadata.h"
 #include "test/core/util/parse_hexstring.h"
 #include "test/core/util/slice_splitter.h"
diff --git a/test/core/transport/chttp2/hpack_table_test.cc b/test/core/transport/chttp2/hpack_table_test.cc
index 3f3cb2ee9db..e316cf63a07 100644
--- a/test/core/transport/chttp2/hpack_table_test.cc
+++ b/test/core/transport/chttp2/hpack_table_test.cc
@@ -26,7 +26,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/transport/metadata_test.cc b/test/core/transport/metadata_test.cc
index 5c52ae8d5f5..7d943fd5c7d 100644
--- a/test/core/transport/metadata_test.cc
+++ b/test/core/transport/metadata_test.cc
@@ -27,8 +27,8 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/transport/pid_controller_test.cc b/test/core/transport/pid_controller_test.cc
index 081d03472a4..1a499c2fb77 100644
--- a/test/core/transport/pid_controller_test.cc
+++ b/test/core/transport/pid_controller_test.cc
@@ -26,7 +26,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 #include <gtest/gtest.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
diff --git a/test/core/transport/timeout_encoding_test.cc b/test/core/transport/timeout_encoding_test.cc
index 0930bc836d7..e94be138ddc 100644
--- a/test/core/transport/timeout_encoding_test.cc
+++ b/test/core/transport/timeout_encoding_test.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/murmur_hash.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/tsi/transport_security_test.cc b/test/core/tsi/transport_security_test.cc
index c788ad96ad5..42e17df25d1 100644
--- a/test/core/tsi/transport_security_test.cc
+++ b/test/core/tsi/transport_security_test.cc
@@ -27,7 +27,7 @@
 
 #include <openssl/crypto.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/tsi/fake_transport_security.h"
 #include "src/core/tsi/ssl_transport_security.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/util/test_config.cc b/test/core/util/test_config.cc
index 9ebb52d83e6..6b410440c22 100644
--- a/test/core/util/test_config.cc
+++ b/test/core/util/test_config.cc
@@ -27,8 +27,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 
 int64_t g_fixture_slowdown_factor = 1;
 int64_t g_poller_slowdown_factor = 1;
diff --git a/test/cpp/end2end/async_end2end_test.cc b/test/cpp/end2end/async_end2end_test.cc
index 1ea087e706a..44cd81a6a42 100644
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@@ -34,8 +34,8 @@
 #include <grpc/support/time.h>
 #include <grpc/support/tls.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/port.h"
-#include "src/core/lib/support/env.h"
 #include "src/proto/grpc/health/v1/health.grpc.pb.h"
 #include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
diff --git a/test/cpp/end2end/client_lb_end2end_test.cc b/test/cpp/end2end/client_lb_end2end_test.cc
index 5a7e52e9e94..02f9f904176 100644
--- a/test/cpp/end2end/client_lb_end2end_test.cc
+++ b/test/cpp/end2end/client_lb_end2end_test.cc
@@ -37,7 +37,7 @@
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
 #include "src/core/ext/filters/client_channel/subchannel_index.h"
 #include "src/core/lib/backoff/backoff.h"
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/core/util/port.h"
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index a6ea5aada9f..e25de810f1a 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -35,8 +35,8 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
 #include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/core/util/port.h"
diff --git a/test/cpp/end2end/grpclb_end2end_test.cc b/test/cpp/end2end/grpclb_end2end_test.cc
index d4ee6b429f2..815dfd0c4f8 100644
--- a/test/cpp/end2end/grpclb_end2end_test.cc
+++ b/test/cpp/end2end/grpclb_end2end_test.cc
@@ -34,8 +34,8 @@
 #include <grpc/support/time.h>
 
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/sockaddr.h"
-#include "src/core/lib/support/env.h"
 
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/cpp/end2end/shutdown_test.cc b/test/cpp/end2end/shutdown_test.cc
index 14ba7c96cca..9119102f7ac 100644
--- a/test/cpp/end2end/shutdown_test.cc
+++ b/test/cpp/end2end/shutdown_test.cc
@@ -28,7 +28,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/cpp/grpclb/grpclb_test.cc b/test/cpp/grpclb/grpclb_test.cc
index 38b65fbc78f..d241594af1b 100644
--- a/test/cpp/grpclb/grpclb_test.cc
+++ b/test/cpp/grpclb/grpclb_test.cc
@@ -40,11 +40,11 @@
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/security/credentials/fake/fake_credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/cq_verifier.h"
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 716fb963827..8958b9884df 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/cpp/interop/client_helper.h"
 #include "test/cpp/interop/interop_client.h"
 #include "test/cpp/util/test_config.h"
diff --git a/test/cpp/interop/http2_client.cc b/test/cpp/interop/http2_client.cc
index 2de7abcf17e..7a9e3ced6af 100644
--- a/test/cpp/interop/http2_client.cc
+++ b/test/cpp/interop/http2_client.cc
@@ -30,7 +30,7 @@
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 #include "test/cpp/interop/http2_client.h"
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/cpp/util/create_test_channel.h"
 #include "test/cpp/util/test_config.h"
 
diff --git a/test/cpp/interop/interop_server.cc b/test/cpp/interop/interop_server.cc
index 30bd8bfef8b..7cfdb2f9e9d 100644
--- a/test/cpp/interop/interop_server.cc
+++ b/test/cpp/interop/interop_server.cc
@@ -31,7 +31,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/transport/byte_stream.h"
 #include "src/proto/grpc/testing/empty.pb.h"
 #include "src/proto/grpc/testing/messages.pb.h"
diff --git a/test/cpp/interop/interop_test.cc b/test/cpp/interop/interop_test.cc
index 1bf0d8d10fc..563b7abb5e9 100644
--- a/test/cpp/interop/interop_test.cc
+++ b/test/cpp/interop/interop_test.cc
@@ -37,8 +37,8 @@
 #include "test/core/util/port.h"
 #include "test/cpp/util/test_config.h"
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/socket_utils_posix.h"
-#include "src/core/lib/support/string.h"
 
 DEFINE_string(extra_server_flags, "", "Extra flags to pass to server.");
 
diff --git a/test/cpp/microbenchmarks/bm_arena.cc b/test/cpp/microbenchmarks/bm_arena.cc
index 5b7c6119199..69c8c1c0299 100644
--- a/test/cpp/microbenchmarks/bm_arena.cc
+++ b/test/cpp/microbenchmarks/bm_arena.cc
@@ -18,7 +18,7 @@
 
 /* Benchmark arenas */
 
-#include "src/core/lib/support/arena.h"
+#include "src/core/lib/gpr/arena.h"
 #include "test/cpp/microbenchmarks/helpers.h"
 #include "third_party/benchmark/include/benchmark/benchmark.h"
 
diff --git a/test/cpp/microbenchmarks/bm_closure.cc b/test/cpp/microbenchmarks/bm_closure.cc
index 4d5a82c3f67..6d88faecc09 100644
--- a/test/cpp/microbenchmarks/bm_closure.cc
+++ b/test/cpp/microbenchmarks/bm_closure.cc
@@ -22,10 +22,10 @@
 #include <grpc/grpc.h>
 #include <sstream>
 
+#include "src/core/lib/gpr/spinlock.h"
 #include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/spinlock.h"
 
 #include "test/cpp/microbenchmarks/helpers.h"
 
diff --git a/test/cpp/naming/resolver_component_test.cc b/test/cpp/naming/resolver_component_test.cc
index 3481d9d1aaf..8b5523f01aa 100644
--- a/test/cpp/naming/resolver_component_test.cc
+++ b/test/cpp/naming/resolver_component_test.cc
@@ -37,13 +37,13 @@
 #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/cpp/naming/resolver_component_tests_runner_invoker.cc b/test/cpp/naming/resolver_component_tests_runner_invoker.cc
index 0beb27de1b8..65f11243fe1 100644
--- a/test/cpp/naming/resolver_component_tests_runner_invoker.cc
+++ b/test/cpp/naming/resolver_component_tests_runner_invoker.cc
@@ -32,7 +32,7 @@
 #include "test/cpp/util/subprocess.h"
 #include "test/cpp/util/test_config.h"
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "test/core/util/port.h"
 
 DEFINE_bool(
diff --git a/test/cpp/qps/driver.cc b/test/cpp/qps/driver.cc
index 22d039d4b72..2f765a6d1e3 100644
--- a/test/cpp/qps/driver.cc
+++ b/test/cpp/qps/driver.cc
@@ -31,8 +31,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/env.h"
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/cpp/qps/json_run_localhost.cc b/test/cpp/qps/json_run_localhost.cc
index db8b2a39437..948c3088e67 100644
--- a/test/cpp/qps/json_run_localhost.cc
+++ b/test/cpp/qps/json_run_localhost.cc
@@ -26,7 +26,7 @@
 
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "test/core/util/port.h"
 #include "test/cpp/util/subprocess.h"
 
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 85bbeed088e..55b10268ba1 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -950,6 +950,28 @@ src/core/lib/compression/stream_compression_identity.h \
 src/core/lib/debug/stats.h \
 src/core/lib/debug/stats_data.h \
 src/core/lib/debug/trace.h \
+src/core/lib/gpr++/abstract.h \
+src/core/lib/gpr++/atomic.h \
+src/core/lib/gpr++/atomic_with_atm.h \
+src/core/lib/gpr++/atomic_with_std.h \
+src/core/lib/gpr++/debug_location.h \
+src/core/lib/gpr++/inlined_vector.h \
+src/core/lib/gpr++/manual_constructor.h \
+src/core/lib/gpr++/memory.h \
+src/core/lib/gpr++/orphanable.h \
+src/core/lib/gpr++/ref_counted.h \
+src/core/lib/gpr++/ref_counted_ptr.h \
+src/core/lib/gpr/arena.h \
+src/core/lib/gpr/env.h \
+src/core/lib/gpr/fork.h \
+src/core/lib/gpr/mpscq.h \
+src/core/lib/gpr/murmur_hash.h \
+src/core/lib/gpr/spinlock.h \
+src/core/lib/gpr/string.h \
+src/core/lib/gpr/string_windows.h \
+src/core/lib/gpr/thd_internal.h \
+src/core/lib/gpr/time_precise.h \
+src/core/lib/gpr/tmpfile.h \
 src/core/lib/http/format_request.h \
 src/core/lib/http/httpcli.h \
 src/core/lib/http/parser.h \
@@ -1026,28 +1048,6 @@ src/core/lib/slice/percent_encoding.h \
 src/core/lib/slice/slice_hash_table.h \
 src/core/lib/slice/slice_internal.h \
 src/core/lib/slice/slice_string_helpers.h \
-src/core/lib/support/abstract.h \
-src/core/lib/support/arena.h \
-src/core/lib/support/atomic.h \
-src/core/lib/support/atomic_with_atm.h \
-src/core/lib/support/atomic_with_std.h \
-src/core/lib/support/debug_location.h \
-src/core/lib/support/env.h \
-src/core/lib/support/fork.h \
-src/core/lib/support/manual_constructor.h \
-src/core/lib/support/memory.h \
-src/core/lib/support/mpscq.h \
-src/core/lib/support/murmur_hash.h \
-src/core/lib/support/orphanable.h \
-src/core/lib/support/ref_counted.h \
-src/core/lib/support/ref_counted_ptr.h \
-src/core/lib/support/spinlock.h \
-src/core/lib/support/string.h \
-src/core/lib/support/string_windows.h \
-src/core/lib/support/thd_internal.h \
-src/core/lib/support/time_precise.h \
-src/core/lib/support/tmpfile.h \
-src/core/lib/support/vector.h \
 src/core/lib/surface/alarm_internal.h \
 src/core/lib/surface/api_trace.h \
 src/core/lib/surface/call.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 4bf0fc74d1d..7857ec72fd4 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -1064,6 +1064,72 @@ src/core/lib/debug/stats_data.cc \
 src/core/lib/debug/stats_data.h \
 src/core/lib/debug/trace.cc \
 src/core/lib/debug/trace.h \
+src/core/lib/gpr++/README.md \
+src/core/lib/gpr++/abstract.h \
+src/core/lib/gpr++/atomic.h \
+src/core/lib/gpr++/atomic_with_atm.h \
+src/core/lib/gpr++/atomic_with_std.h \
+src/core/lib/gpr++/debug_location.h \
+src/core/lib/gpr++/inlined_vector.h \
+src/core/lib/gpr++/manual_constructor.h \
+src/core/lib/gpr++/memory.h \
+src/core/lib/gpr++/orphanable.h \
+src/core/lib/gpr++/ref_counted.h \
+src/core/lib/gpr++/ref_counted_ptr.h \
+src/core/lib/gpr/README.md \
+src/core/lib/gpr/alloc.cc \
+src/core/lib/gpr/arena.cc \
+src/core/lib/gpr/arena.h \
+src/core/lib/gpr/atm.cc \
+src/core/lib/gpr/avl.cc \
+src/core/lib/gpr/cmdline.cc \
+src/core/lib/gpr/cpu_iphone.cc \
+src/core/lib/gpr/cpu_linux.cc \
+src/core/lib/gpr/cpu_posix.cc \
+src/core/lib/gpr/cpu_windows.cc \
+src/core/lib/gpr/env.h \
+src/core/lib/gpr/env_linux.cc \
+src/core/lib/gpr/env_posix.cc \
+src/core/lib/gpr/env_windows.cc \
+src/core/lib/gpr/fork.cc \
+src/core/lib/gpr/fork.h \
+src/core/lib/gpr/host_port.cc \
+src/core/lib/gpr/log.cc \
+src/core/lib/gpr/log_android.cc \
+src/core/lib/gpr/log_linux.cc \
+src/core/lib/gpr/log_posix.cc \
+src/core/lib/gpr/log_windows.cc \
+src/core/lib/gpr/mpscq.cc \
+src/core/lib/gpr/mpscq.h \
+src/core/lib/gpr/murmur_hash.cc \
+src/core/lib/gpr/murmur_hash.h \
+src/core/lib/gpr/spinlock.h \
+src/core/lib/gpr/string.cc \
+src/core/lib/gpr/string.h \
+src/core/lib/gpr/string_posix.cc \
+src/core/lib/gpr/string_util_windows.cc \
+src/core/lib/gpr/string_windows.cc \
+src/core/lib/gpr/string_windows.h \
+src/core/lib/gpr/subprocess_posix.cc \
+src/core/lib/gpr/subprocess_windows.cc \
+src/core/lib/gpr/sync.cc \
+src/core/lib/gpr/sync_posix.cc \
+src/core/lib/gpr/sync_windows.cc \
+src/core/lib/gpr/thd.cc \
+src/core/lib/gpr/thd_internal.h \
+src/core/lib/gpr/thd_posix.cc \
+src/core/lib/gpr/thd_windows.cc \
+src/core/lib/gpr/time.cc \
+src/core/lib/gpr/time_posix.cc \
+src/core/lib/gpr/time_precise.cc \
+src/core/lib/gpr/time_precise.h \
+src/core/lib/gpr/time_windows.cc \
+src/core/lib/gpr/tls_pthread.cc \
+src/core/lib/gpr/tmpfile.h \
+src/core/lib/gpr/tmpfile_msys.cc \
+src/core/lib/gpr/tmpfile_posix.cc \
+src/core/lib/gpr/tmpfile_windows.cc \
+src/core/lib/gpr/wrap_memcpy.cc \
 src/core/lib/http/format_request.cc \
 src/core/lib/http/format_request.h \
 src/core/lib/http/httpcli.cc \
@@ -1271,70 +1337,6 @@ src/core/lib/slice/slice_intern.cc \
 src/core/lib/slice/slice_internal.h \
 src/core/lib/slice/slice_string_helpers.cc \
 src/core/lib/slice/slice_string_helpers.h \
-src/core/lib/support/abstract.h \
-src/core/lib/support/alloc.cc \
-src/core/lib/support/arena.cc \
-src/core/lib/support/arena.h \
-src/core/lib/support/atm.cc \
-src/core/lib/support/atomic.h \
-src/core/lib/support/atomic_with_atm.h \
-src/core/lib/support/atomic_with_std.h \
-src/core/lib/support/avl.cc \
-src/core/lib/support/cmdline.cc \
-src/core/lib/support/cpu_iphone.cc \
-src/core/lib/support/cpu_linux.cc \
-src/core/lib/support/cpu_posix.cc \
-src/core/lib/support/cpu_windows.cc \
-src/core/lib/support/debug_location.h \
-src/core/lib/support/env.h \
-src/core/lib/support/env_linux.cc \
-src/core/lib/support/env_posix.cc \
-src/core/lib/support/env_windows.cc \
-src/core/lib/support/fork.cc \
-src/core/lib/support/fork.h \
-src/core/lib/support/host_port.cc \
-src/core/lib/support/log.cc \
-src/core/lib/support/log_android.cc \
-src/core/lib/support/log_linux.cc \
-src/core/lib/support/log_posix.cc \
-src/core/lib/support/log_windows.cc \
-src/core/lib/support/manual_constructor.h \
-src/core/lib/support/memory.h \
-src/core/lib/support/mpscq.cc \
-src/core/lib/support/mpscq.h \
-src/core/lib/support/murmur_hash.cc \
-src/core/lib/support/murmur_hash.h \
-src/core/lib/support/orphanable.h \
-src/core/lib/support/ref_counted.h \
-src/core/lib/support/ref_counted_ptr.h \
-src/core/lib/support/spinlock.h \
-src/core/lib/support/string.cc \
-src/core/lib/support/string.h \
-src/core/lib/support/string_posix.cc \
-src/core/lib/support/string_util_windows.cc \
-src/core/lib/support/string_windows.cc \
-src/core/lib/support/string_windows.h \
-src/core/lib/support/subprocess_posix.cc \
-src/core/lib/support/subprocess_windows.cc \
-src/core/lib/support/sync.cc \
-src/core/lib/support/sync_posix.cc \
-src/core/lib/support/sync_windows.cc \
-src/core/lib/support/thd.cc \
-src/core/lib/support/thd_internal.h \
-src/core/lib/support/thd_posix.cc \
-src/core/lib/support/thd_windows.cc \
-src/core/lib/support/time.cc \
-src/core/lib/support/time_posix.cc \
-src/core/lib/support/time_precise.cc \
-src/core/lib/support/time_precise.h \
-src/core/lib/support/time_windows.cc \
-src/core/lib/support/tls_pthread.cc \
-src/core/lib/support/tmpfile.h \
-src/core/lib/support/tmpfile_msys.cc \
-src/core/lib/support/tmpfile_posix.cc \
-src/core/lib/support/tmpfile_windows.cc \
-src/core/lib/support/vector.h \
-src/core/lib/support/wrap_memcpy.cc \
 src/core/lib/surface/README.md \
 src/core/lib/surface/alarm.cc \
 src/core/lib/surface/alarm_internal.h \
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index df45489d5e8..982d9ef6496 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -45,7 +45,7 @@
     "language": "c", 
     "name": "alloc_test", 
     "src": [
-      "test/core/support/alloc_test.cc"
+      "test/core/gpr/alloc_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -94,7 +94,7 @@
     "language": "c", 
     "name": "arena_test", 
     "src": [
-      "test/core/support/arena_test.cc"
+      "test/core/gpr/arena_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -597,7 +597,7 @@
     "language": "c", 
     "name": "gpr_avl_test", 
     "src": [
-      "test/core/support/avl_test.cc"
+      "test/core/gpr/avl_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -612,7 +612,7 @@
     "language": "c", 
     "name": "gpr_cmdline_test", 
     "src": [
-      "test/core/support/cmdline_test.cc"
+      "test/core/gpr/cmdline_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -627,7 +627,7 @@
     "language": "c", 
     "name": "gpr_cpu_test", 
     "src": [
-      "test/core/support/cpu_test.cc"
+      "test/core/gpr/cpu_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -642,7 +642,7 @@
     "language": "c", 
     "name": "gpr_env_test", 
     "src": [
-      "test/core/support/env_test.cc"
+      "test/core/gpr/env_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -657,7 +657,7 @@
     "language": "c", 
     "name": "gpr_host_port_test", 
     "src": [
-      "test/core/support/host_port_test.cc"
+      "test/core/gpr/host_port_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -672,7 +672,7 @@
     "language": "c", 
     "name": "gpr_log_test", 
     "src": [
-      "test/core/support/log_test.cc"
+      "test/core/gpr/log_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -687,7 +687,7 @@
     "language": "c", 
     "name": "gpr_manual_constructor_test", 
     "src": [
-      "test/core/support/manual_constructor_test.cc"
+      "test/core/gpr++/manual_constructor_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -702,7 +702,7 @@
     "language": "c", 
     "name": "gpr_mpscq_test", 
     "src": [
-      "test/core/support/mpscq_test.cc"
+      "test/core/gpr/mpscq_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -717,7 +717,7 @@
     "language": "c", 
     "name": "gpr_spinlock_test", 
     "src": [
-      "test/core/support/spinlock_test.cc"
+      "test/core/gpr/spinlock_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -732,7 +732,7 @@
     "language": "c", 
     "name": "gpr_string_test", 
     "src": [
-      "test/core/support/string_test.cc"
+      "test/core/gpr/string_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -747,7 +747,7 @@
     "language": "c", 
     "name": "gpr_sync_test", 
     "src": [
-      "test/core/support/sync_test.cc"
+      "test/core/gpr/sync_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -762,7 +762,7 @@
     "language": "c", 
     "name": "gpr_thd_test", 
     "src": [
-      "test/core/support/thd_test.cc"
+      "test/core/gpr/thd_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -777,7 +777,7 @@
     "language": "c", 
     "name": "gpr_time_test", 
     "src": [
-      "test/core/support/time_test.cc"
+      "test/core/gpr/time_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -792,7 +792,7 @@
     "language": "c", 
     "name": "gpr_tls_test", 
     "src": [
-      "test/core/support/tls_test.cc"
+      "test/core/gpr/tls_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -807,7 +807,7 @@
     "language": "c", 
     "name": "gpr_useful_test", 
     "src": [
-      "test/core/support/useful_test.cc"
+      "test/core/gpr/useful_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -1636,7 +1636,7 @@
     "language": "c", 
     "name": "murmur_hash_test", 
     "src": [
-      "test/core/support/murmur_hash_test.cc"
+      "test/core/gpr/murmur_hash_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -3528,6 +3528,25 @@
     "third_party": false, 
     "type": "target"
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
+      "grpc++_test", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "inlined_vector_test", 
+    "src": [
+      "test/core/gpr++/inlined_vector_test.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -3643,7 +3662,7 @@
     "language": "c++", 
     "name": "memory_test", 
     "src": [
-      "test/core/support/memory_test.cc"
+      "test/core/gpr++/memory_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -3721,7 +3740,7 @@
     "language": "c++", 
     "name": "orphanable_test", 
     "src": [
-      "test/core/support/orphanable_test.cc"
+      "test/core/gpr++/orphanable_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -3932,7 +3951,7 @@
     "language": "c++", 
     "name": "ref_counted_ptr_test", 
     "src": [
-      "test/core/support/ref_counted_ptr_test.cc"
+      "test/core/gpr++/ref_counted_ptr_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -3951,7 +3970,7 @@
     "language": "c++", 
     "name": "ref_counted_test", 
     "src": [
-      "test/core/support/ref_counted_test.cc"
+      "test/core/gpr++/ref_counted_test.cc"
     ], 
     "third_party": false, 
     "type": "target"
@@ -4300,25 +4319,6 @@
     "third_party": false, 
     "type": "target"
   }, 
-  {
-    "deps": [
-      "gpr", 
-      "gpr_test_util", 
-      "grpc", 
-      "grpc++", 
-      "grpc++_test", 
-      "grpc_test_util"
-    ], 
-    "headers": [], 
-    "is_filegroup": false, 
-    "language": "c++", 
-    "name": "vector_test", 
-    "src": [
-      "test/core/support/vector_test.cc"
-    ], 
-    "third_party": false, 
-    "type": "target"
-  }, 
   {
     "deps": [
       "gpr", 
@@ -7827,50 +7827,50 @@
     "language": "c", 
     "name": "gpr_base", 
     "src": [
+      "src/core/lib/gpr/alloc.cc", 
+      "src/core/lib/gpr/arena.cc", 
+      "src/core/lib/gpr/atm.cc", 
+      "src/core/lib/gpr/avl.cc", 
+      "src/core/lib/gpr/cmdline.cc", 
+      "src/core/lib/gpr/cpu_iphone.cc", 
+      "src/core/lib/gpr/cpu_linux.cc", 
+      "src/core/lib/gpr/cpu_posix.cc", 
+      "src/core/lib/gpr/cpu_windows.cc", 
+      "src/core/lib/gpr/env_linux.cc", 
+      "src/core/lib/gpr/env_posix.cc", 
+      "src/core/lib/gpr/env_windows.cc", 
+      "src/core/lib/gpr/fork.cc", 
+      "src/core/lib/gpr/host_port.cc", 
+      "src/core/lib/gpr/log.cc", 
+      "src/core/lib/gpr/log_android.cc", 
+      "src/core/lib/gpr/log_linux.cc", 
+      "src/core/lib/gpr/log_posix.cc", 
+      "src/core/lib/gpr/log_windows.cc", 
+      "src/core/lib/gpr/mpscq.cc", 
+      "src/core/lib/gpr/murmur_hash.cc", 
+      "src/core/lib/gpr/string.cc", 
+      "src/core/lib/gpr/string_posix.cc", 
+      "src/core/lib/gpr/string_util_windows.cc", 
+      "src/core/lib/gpr/string_windows.cc", 
+      "src/core/lib/gpr/subprocess_posix.cc", 
+      "src/core/lib/gpr/subprocess_windows.cc", 
+      "src/core/lib/gpr/sync.cc", 
+      "src/core/lib/gpr/sync_posix.cc", 
+      "src/core/lib/gpr/sync_windows.cc", 
+      "src/core/lib/gpr/thd.cc", 
+      "src/core/lib/gpr/thd_posix.cc", 
+      "src/core/lib/gpr/thd_windows.cc", 
+      "src/core/lib/gpr/time.cc", 
+      "src/core/lib/gpr/time_posix.cc", 
+      "src/core/lib/gpr/time_precise.cc", 
+      "src/core/lib/gpr/time_windows.cc", 
+      "src/core/lib/gpr/tls_pthread.cc", 
+      "src/core/lib/gpr/tmpfile_msys.cc", 
+      "src/core/lib/gpr/tmpfile_posix.cc", 
+      "src/core/lib/gpr/tmpfile_windows.cc", 
+      "src/core/lib/gpr/wrap_memcpy.cc", 
       "src/core/lib/profiling/basic_timers.cc", 
-      "src/core/lib/profiling/stap_timers.cc", 
-      "src/core/lib/support/alloc.cc", 
-      "src/core/lib/support/arena.cc", 
-      "src/core/lib/support/atm.cc", 
-      "src/core/lib/support/avl.cc", 
-      "src/core/lib/support/cmdline.cc", 
-      "src/core/lib/support/cpu_iphone.cc", 
-      "src/core/lib/support/cpu_linux.cc", 
-      "src/core/lib/support/cpu_posix.cc", 
-      "src/core/lib/support/cpu_windows.cc", 
-      "src/core/lib/support/env_linux.cc", 
-      "src/core/lib/support/env_posix.cc", 
-      "src/core/lib/support/env_windows.cc", 
-      "src/core/lib/support/fork.cc", 
-      "src/core/lib/support/host_port.cc", 
-      "src/core/lib/support/log.cc", 
-      "src/core/lib/support/log_android.cc", 
-      "src/core/lib/support/log_linux.cc", 
-      "src/core/lib/support/log_posix.cc", 
-      "src/core/lib/support/log_windows.cc", 
-      "src/core/lib/support/mpscq.cc", 
-      "src/core/lib/support/murmur_hash.cc", 
-      "src/core/lib/support/string.cc", 
-      "src/core/lib/support/string_posix.cc", 
-      "src/core/lib/support/string_util_windows.cc", 
-      "src/core/lib/support/string_windows.cc", 
-      "src/core/lib/support/subprocess_posix.cc", 
-      "src/core/lib/support/subprocess_windows.cc", 
-      "src/core/lib/support/sync.cc", 
-      "src/core/lib/support/sync_posix.cc", 
-      "src/core/lib/support/sync_windows.cc", 
-      "src/core/lib/support/thd.cc", 
-      "src/core/lib/support/thd_posix.cc", 
-      "src/core/lib/support/thd_windows.cc", 
-      "src/core/lib/support/time.cc", 
-      "src/core/lib/support/time_posix.cc", 
-      "src/core/lib/support/time_precise.cc", 
-      "src/core/lib/support/time_windows.cc", 
-      "src/core/lib/support/tls_pthread.cc", 
-      "src/core/lib/support/tmpfile_msys.cc", 
-      "src/core/lib/support/tmpfile_posix.cc", 
-      "src/core/lib/support/tmpfile_windows.cc", 
-      "src/core/lib/support/wrap_memcpy.cc"
+      "src/core/lib/profiling/stap_timers.cc"
     ], 
     "third_party": false, 
     "type": "filegroup"
@@ -7906,24 +7906,24 @@
       "include/grpc/support/tls_msvc.h", 
       "include/grpc/support/tls_pthread.h", 
       "include/grpc/support/useful.h", 
-      "src/core/lib/profiling/timers.h", 
-      "src/core/lib/support/abstract.h", 
-      "src/core/lib/support/arena.h", 
-      "src/core/lib/support/atomic.h", 
-      "src/core/lib/support/atomic_with_atm.h", 
-      "src/core/lib/support/atomic_with_std.h", 
-      "src/core/lib/support/env.h", 
-      "src/core/lib/support/fork.h", 
-      "src/core/lib/support/manual_constructor.h", 
-      "src/core/lib/support/memory.h", 
-      "src/core/lib/support/mpscq.h", 
-      "src/core/lib/support/murmur_hash.h", 
-      "src/core/lib/support/spinlock.h", 
-      "src/core/lib/support/string.h", 
-      "src/core/lib/support/string_windows.h", 
-      "src/core/lib/support/thd_internal.h", 
-      "src/core/lib/support/time_precise.h", 
-      "src/core/lib/support/tmpfile.h"
+      "src/core/lib/gpr++/abstract.h", 
+      "src/core/lib/gpr++/atomic.h", 
+      "src/core/lib/gpr++/atomic_with_atm.h", 
+      "src/core/lib/gpr++/atomic_with_std.h", 
+      "src/core/lib/gpr++/manual_constructor.h", 
+      "src/core/lib/gpr++/memory.h", 
+      "src/core/lib/gpr/arena.h", 
+      "src/core/lib/gpr/env.h", 
+      "src/core/lib/gpr/fork.h", 
+      "src/core/lib/gpr/mpscq.h", 
+      "src/core/lib/gpr/murmur_hash.h", 
+      "src/core/lib/gpr/spinlock.h", 
+      "src/core/lib/gpr/string.h", 
+      "src/core/lib/gpr/string_windows.h", 
+      "src/core/lib/gpr/thd_internal.h", 
+      "src/core/lib/gpr/time_precise.h", 
+      "src/core/lib/gpr/tmpfile.h", 
+      "src/core/lib/profiling/timers.h"
     ], 
     "is_filegroup": true, 
     "language": "c", 
@@ -7955,24 +7955,24 @@
       "include/grpc/support/tls_msvc.h", 
       "include/grpc/support/tls_pthread.h", 
       "include/grpc/support/useful.h", 
-      "src/core/lib/profiling/timers.h", 
-      "src/core/lib/support/abstract.h", 
-      "src/core/lib/support/arena.h", 
-      "src/core/lib/support/atomic.h", 
-      "src/core/lib/support/atomic_with_atm.h", 
-      "src/core/lib/support/atomic_with_std.h", 
-      "src/core/lib/support/env.h", 
-      "src/core/lib/support/fork.h", 
-      "src/core/lib/support/manual_constructor.h", 
-      "src/core/lib/support/memory.h", 
-      "src/core/lib/support/mpscq.h", 
-      "src/core/lib/support/murmur_hash.h", 
-      "src/core/lib/support/spinlock.h", 
-      "src/core/lib/support/string.h", 
-      "src/core/lib/support/string_windows.h", 
-      "src/core/lib/support/thd_internal.h", 
-      "src/core/lib/support/time_precise.h", 
-      "src/core/lib/support/tmpfile.h"
+      "src/core/lib/gpr++/abstract.h", 
+      "src/core/lib/gpr++/atomic.h", 
+      "src/core/lib/gpr++/atomic_with_atm.h", 
+      "src/core/lib/gpr++/atomic_with_std.h", 
+      "src/core/lib/gpr++/manual_constructor.h", 
+      "src/core/lib/gpr++/memory.h", 
+      "src/core/lib/gpr/arena.h", 
+      "src/core/lib/gpr/env.h", 
+      "src/core/lib/gpr/fork.h", 
+      "src/core/lib/gpr/mpscq.h", 
+      "src/core/lib/gpr/murmur_hash.h", 
+      "src/core/lib/gpr/spinlock.h", 
+      "src/core/lib/gpr/string.h", 
+      "src/core/lib/gpr/string_windows.h", 
+      "src/core/lib/gpr/thd_internal.h", 
+      "src/core/lib/gpr/time_precise.h", 
+      "src/core/lib/gpr/tmpfile.h", 
+      "src/core/lib/profiling/timers.h"
     ], 
     "third_party": false, 
     "type": "filegroup"
@@ -8229,6 +8229,11 @@
       "src/core/lib/compression/stream_compression_identity.h", 
       "src/core/lib/debug/stats.h", 
       "src/core/lib/debug/stats_data.h", 
+      "src/core/lib/gpr++/debug_location.h", 
+      "src/core/lib/gpr++/inlined_vector.h", 
+      "src/core/lib/gpr++/orphanable.h", 
+      "src/core/lib/gpr++/ref_counted.h", 
+      "src/core/lib/gpr++/ref_counted_ptr.h", 
       "src/core/lib/http/format_request.h", 
       "src/core/lib/http/httpcli.h", 
       "src/core/lib/http/parser.h", 
@@ -8304,11 +8309,6 @@
       "src/core/lib/slice/slice_hash_table.h", 
       "src/core/lib/slice/slice_internal.h", 
       "src/core/lib/slice/slice_string_helpers.h", 
-      "src/core/lib/support/debug_location.h", 
-      "src/core/lib/support/orphanable.h", 
-      "src/core/lib/support/ref_counted.h", 
-      "src/core/lib/support/ref_counted_ptr.h", 
-      "src/core/lib/support/vector.h", 
       "src/core/lib/surface/alarm_internal.h", 
       "src/core/lib/surface/api_trace.h", 
       "src/core/lib/surface/call.h", 
@@ -8370,6 +8370,11 @@
       "src/core/lib/compression/stream_compression_identity.h", 
       "src/core/lib/debug/stats.h", 
       "src/core/lib/debug/stats_data.h", 
+      "src/core/lib/gpr++/debug_location.h", 
+      "src/core/lib/gpr++/inlined_vector.h", 
+      "src/core/lib/gpr++/orphanable.h", 
+      "src/core/lib/gpr++/ref_counted.h", 
+      "src/core/lib/gpr++/ref_counted_ptr.h", 
       "src/core/lib/http/format_request.h", 
       "src/core/lib/http/httpcli.h", 
       "src/core/lib/http/parser.h", 
@@ -8445,11 +8450,6 @@
       "src/core/lib/slice/slice_hash_table.h", 
       "src/core/lib/slice/slice_internal.h", 
       "src/core/lib/slice/slice_string_helpers.h", 
-      "src/core/lib/support/debug_location.h", 
-      "src/core/lib/support/orphanable.h", 
-      "src/core/lib/support/ref_counted.h", 
-      "src/core/lib/support/ref_counted_ptr.h", 
-      "src/core/lib/support/vector.h", 
       "src/core/lib/surface/alarm_internal.h", 
       "src/core/lib/surface/api_trace.h", 
       "src/core/lib/surface/call.h", 
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index dc2b39eb217..7b23cab5066 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -3961,6 +3961,30 @@
     ], 
     "uses_polling": true
   }, 
+  {
+    "args": [], 
+    "benchmark": false, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": true, 
+    "language": "c++", 
+    "name": "inlined_vector_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "uses_polling": true
+  }, 
   {
     "args": [], 
     "benchmark": false, 
@@ -4552,30 +4576,6 @@
     ], 
     "uses_polling": true
   }, 
-  {
-    "args": [], 
-    "benchmark": false, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": false, 
-    "gtest": true, 
-    "language": "c++", 
-    "name": "vector_test", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "uses_polling": true
-  }, 
   {
     "args": [], 
     "benchmark": false, 
diff --git a/tools/run_tests/sanity/core_banned_functions.py b/tools/run_tests/sanity/core_banned_functions.py
index 9ee28964a5a..989990542e3 100755
--- a/tools/run_tests/sanity/core_banned_functions.py
+++ b/tools/run_tests/sanity/core_banned_functions.py
@@ -42,8 +42,8 @@ BANNED_EXCEPT = {
     'grpc_closure_run(': ['src/core/lib/iomgr/closure.c'],
     'grpc_closure_list_sched(': ['src/core/lib/iomgr/closure.c'],
     'gpr_getenv_silent(': [
-        'src/core/lib/support/log.c', 'src/core/lib/support/env_linux.c',
-        'src/core/lib/support/env_posix.c', 'src/core/lib/support/env_windows.c'
+        'src/core/lib/gpr/log.c', 'src/core/lib/gpr/env_linux.c',
+        'src/core/lib/gpr/env_posix.c', 'src/core/lib/gpr/env_windows.c'
     ],
 }