Update by review

bazel/grpc_build_system.bzl

@@ -88,11 +88,19 @@ def grpc_cc_library(
     linkopts = if_not_windows(["-pthread"])
     if use_cfstream:
         linkopts = linkopts + if_mac(["-framework CoreFoundation"])
-    # Temporary hack for GRPC_USE_ABSL {
+
+    # This is a temporary solution to enable absl dependency only for
+    # Bazel-build with grpc_use_absl enabled to abseilfy in-house classes
+    # such as inlined_vector before absl is fully supported.
+    # When https://github.com/grpc/grpc/pull/20184 is merged, it will
+    # be removed.
     more_external_deps = []
     if name == "inlined_vector":
-        more_external_deps += ["absl/container:inlined_vector"]
-    # Temporary hack for GRPC_USE_ABSL }
+        more_external_deps += select({
+            "//:grpc_use_absl": ["@com_google_absl//absl/container:inlined_vector"],
+            "//conditions:default": [],
+        })
+
     native.cc_library(
         name = name,
         srcs = srcs,
@@ -114,7 +122,7 @@ def grpc_cc_library(
                       "//conditions:default": [],
                   }),
         hdrs = hdrs + public_hdrs,
-        deps = deps + _get_external_deps(external_deps + more_external_deps),
+        deps = deps + _get_external_deps(external_deps) + more_external_deps,
         copts = copts,
         visibility = visibility,
         testonly = testonly,

src/core/lib/gprpp/inlined_vector.h

@@ -233,14 +233,7 @@ class InlinedVector {
     }
   }
 
-#if 1
   typename std::aligned_storage<sizeof(T)>::type inline_[N];
-#else
-  // Alignment attribute should be used like this but it has a problem
-  // with current gRPC source. It has to be disabled until other gRPC part
-  // goes well with this.
-  typename std::aligned_storage<sizeof(T), alignof(T)>::type inline_[N];
-#endif
   T* dynamic_;
   size_t size_;
   size_t capacity_;

tools/internal_ci/linux/grpc_bazel_build_in_docker.sh

@@ -25,4 +25,7 @@ git clone /var/local/jenkins/grpc /var/local/git/grpc
 ${name}')
 cd /var/local/git/grpc
 bazel build --spawn_strategy=standalone --genrule_strategy=standalone :all test/... examples/...
+
+# This is a temporary build test before full absl support is done
+# with https://github.com/grpc/grpc/pull/20918.
 bazel build --spawn_strategy=standalone --genrule_strategy=standalone --define=GRPC_USE_ABSL=1 :grpc