From 6c29a8720e6220c42ffcca2cb6d12de5469de075 Mon Sep 17 00:00:00 2001
From: AJ Heller <hork@google.com>
Date: Fri, 23 Feb 2024 12:10:47 -0800
Subject: [PATCH] [test] Remove passthru_endpiont and its microbenchmarks
 (#35986)

Closes #35986

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35986 from drfloob:rm-passthru-endpoint 12c491f7f6ffd474fdf6af9cdee6ca1dd012aca4
PiperOrigin-RevId: 609800868
---
 CMakeLists.txt                                |  74 ---
 build_autogenerated.yaml                      | 148 -----
 grpc.gyp                                      |   2 -
 test/core/util/BUILD                          |   2 -
 test/core/util/passthru_endpoint.cc           | 525 ------------------
 test/core/util/passthru_endpoint.h            |  58 --
 .../bm_fullstack_streaming_ping_pong.cc       |  18 -
 .../bm_fullstack_streaming_pump.cc            |   6 -
 .../bm_fullstack_unary_ping_pong.cc           |  55 --
 test/cpp/microbenchmarks/fullstack_fixtures.h |  41 --
 10 files changed, 929 deletions(-)
 delete mode 100644 test/core/util/passthru_endpoint.cc
 delete mode 100644 test/core/util/passthru_endpoint.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a2a098e5755..fb3dc1cb780 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3940,7 +3940,6 @@ add_library(benchmark_helpers ${_gRPC_STATIC_WIN32}
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -4713,7 +4712,6 @@ add_library(grpc++_test_util
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -5689,7 +5687,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -5851,7 +5848,6 @@ add_executable(test_core_iomgr_timer_list_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -5993,7 +5989,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -6116,7 +6111,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -6661,7 +6655,6 @@ add_executable(alts_security_connector_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -7037,7 +7030,6 @@ add_executable(auth_context_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -7132,7 +7124,6 @@ add_executable(authorization_matchers_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -7272,7 +7263,6 @@ add_executable(aws_request_signer_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -7576,7 +7566,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -7633,7 +7622,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -8247,7 +8235,6 @@ add_executable(buffer_list_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -9304,7 +9291,6 @@ add_executable(cel_authorization_engine_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -9679,7 +9665,6 @@ add_executable(channel_creds_registry_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -10012,7 +9997,6 @@ add_executable(check_gcp_environment_linux_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -10064,7 +10048,6 @@ add_executable(check_gcp_environment_windows_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -10864,7 +10847,6 @@ add_executable(cmdline_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -11005,7 +10987,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -11375,7 +11356,6 @@ add_executable(connectivity_state_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -12770,7 +12750,6 @@ add_executable(endpoint_pair_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -12921,7 +12900,6 @@ add_executable(error_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -12973,7 +12951,6 @@ add_executable(error_utils_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -13025,7 +13002,6 @@ add_executable(evaluate_args_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -13667,7 +13643,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -14387,7 +14362,6 @@ add_executable(format_request_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -14890,7 +14864,6 @@ add_executable(grpc_alts_credentials_options_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -14985,7 +14958,6 @@ add_executable(grpc_authorization_engine_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -15037,7 +15009,6 @@ add_executable(grpc_authorization_policy_provider_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -15425,7 +15396,6 @@ add_executable(grpc_ipv6_loopback_available_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -15667,7 +15637,6 @@ add_executable(grpc_tls_certificate_distributor_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -15719,7 +15688,6 @@ add_executable(grpc_tls_certificate_provider_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -15771,7 +15739,6 @@ add_executable(grpc_tls_certificate_verifier_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -15823,7 +15790,6 @@ add_executable(grpc_tls_credentials_options_comparator_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -15875,7 +15841,6 @@ add_executable(grpc_tls_credentials_options_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -16610,7 +16575,6 @@ add_executable(histogram_test
   test/core/util/histogram_test.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -16704,7 +16668,6 @@ add_executable(hpack_encoder_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -16756,7 +16719,6 @@ add_executable(hpack_parser_table_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -16808,7 +16770,6 @@ add_executable(hpack_parser_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -17528,7 +17489,6 @@ add_executable(insecure_security_connector_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -18193,7 +18153,6 @@ add_executable(json_token_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -18245,7 +18204,6 @@ add_executable(jwt_verifier_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -18980,7 +18938,6 @@ add_executable(matchers_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -19468,7 +19425,6 @@ add_executable(message_compress_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -19562,7 +19518,6 @@ add_executable(metadata_map_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -20867,7 +20822,6 @@ add_executable(parser_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -21190,7 +21144,6 @@ add_executable(ping_abuse_policy_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -21284,7 +21237,6 @@ add_executable(ping_configuration_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -21398,7 +21350,6 @@ add_executable(ping_rate_policy_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -22882,7 +22833,6 @@ add_executable(rbac_translator_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -23250,7 +23200,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -23304,7 +23253,6 @@ add_executable(resolve_address_using_ares_resolver_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -23358,7 +23306,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -23412,7 +23359,6 @@ add_executable(resolve_address_using_native_resolver_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -26117,7 +26063,6 @@ add_executable(secure_endpoint_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -26169,7 +26114,6 @@ add_executable(security_connector_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -26388,7 +26332,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -26460,7 +26403,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -26927,7 +26869,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -27238,7 +27179,6 @@ add_executable(settings_timeout_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -27964,7 +27904,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -28351,7 +28290,6 @@ add_executable(status_conversion_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -28699,7 +28637,6 @@ add_executable(streams_not_seen_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -28922,7 +28859,6 @@ add_executable(system_roots_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -29009,7 +28945,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -29108,7 +29043,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -29162,7 +29096,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -29599,7 +29532,6 @@ add_executable(test_core_iomgr_timer_heap_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -29651,7 +29583,6 @@ add_executable(test_core_security_credentials_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -29703,7 +29634,6 @@ add_executable(test_core_security_ssl_credentials_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -30630,7 +30560,6 @@ add_executable(timeout_encoding_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -30932,7 +30861,6 @@ add_executable(tls_security_connector_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
@@ -32497,7 +32425,6 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     test/core/util/histogram.cc
     test/core/util/mock_endpoint.cc
     test/core/util/parse_hexstring.cc
-    test/core/util/passthru_endpoint.cc
     test/core/util/resolve_localhost_ip46.cc
     test/core/util/slice_splitter.cc
     test/core/util/tracer_util.cc
@@ -33595,7 +33522,6 @@ add_executable(xds_credentials_test
   test/core/util/histogram.cc
   test/core/util/mock_endpoint.cc
   test/core/util/parse_hexstring.cc
-  test/core/util/passthru_endpoint.cc
   test/core/util/resolve_localhost_ip46.cc
   test/core/util/slice_splitter.cc
   test/core/util/tracer_util.cc
diff --git a/build_autogenerated.yaml b/build_autogenerated.yaml
index 9047e2c274f..ea4c8a834f7 100644
--- a/build_autogenerated.yaml
+++ b/build_autogenerated.yaml
@@ -3578,7 +3578,6 @@ libs:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -3596,7 +3595,6 @@ libs:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -4001,7 +3999,6 @@ libs:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -4023,7 +4020,6 @@ libs:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5096,7 +5092,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5108,7 +5103,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5169,7 +5163,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5181,7 +5174,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5259,7 +5251,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5275,7 +5266,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5324,7 +5314,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5335,7 +5324,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5517,7 +5505,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5529,7 +5516,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5635,7 +5621,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5647,7 +5632,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5679,7 +5663,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5691,7 +5674,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5740,7 +5722,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5752,7 +5733,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5887,7 +5867,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5902,7 +5881,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -5928,7 +5906,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -5943,7 +5920,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -6250,7 +6226,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -6262,7 +6237,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -7257,7 +7231,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -7358,7 +7331,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -7477,7 +7449,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -7489,7 +7460,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -7586,7 +7556,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -7598,7 +7567,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -7618,7 +7586,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -7630,7 +7597,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -8032,7 +7998,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -8044,7 +8009,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -8090,7 +8054,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -8102,7 +8065,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -8257,7 +8219,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -8269,7 +8230,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -8942,7 +8902,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -8955,7 +8914,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -9001,7 +8959,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -9014,7 +8971,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -9035,7 +8991,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -9047,7 +9002,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -9067,7 +9021,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -9079,7 +9032,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -9435,7 +9387,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -9447,7 +9398,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10064,7 +10014,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10080,7 +10029,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10294,7 +10242,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10306,7 +10253,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10337,7 +10283,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10350,7 +10295,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10370,7 +10314,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10382,7 +10325,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10546,7 +10488,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10558,7 +10499,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10618,7 +10558,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10630,7 +10569,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10650,7 +10588,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10662,7 +10599,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10682,7 +10618,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10694,7 +10629,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10714,7 +10648,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10726,7 +10659,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -10746,7 +10678,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -10758,7 +10689,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -11055,7 +10985,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -11067,7 +10996,6 @@ targets:
   - test/core/util/histogram_test.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -11099,7 +11027,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -11111,7 +11038,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -11132,7 +11058,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -11144,7 +11069,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -11165,7 +11089,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -11177,7 +11100,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -11501,7 +11423,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -11513,7 +11434,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -11899,7 +11819,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -11911,7 +11830,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -11932,7 +11850,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -11944,7 +11861,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -12405,7 +12321,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -12417,7 +12332,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -12735,7 +12649,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -12747,7 +12660,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -12778,7 +12690,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -12790,7 +12701,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -13341,7 +13251,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -13357,7 +13266,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -13575,7 +13483,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -13587,7 +13494,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -13620,7 +13526,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -13632,7 +13537,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -13714,7 +13618,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -13726,7 +13629,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -14368,7 +14270,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -14380,7 +14281,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -14618,7 +14518,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -14630,7 +14529,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -14657,7 +14555,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -14670,7 +14567,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -14691,7 +14587,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -14703,7 +14598,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -14730,7 +14624,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -14743,7 +14636,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -17040,7 +16932,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -17053,7 +16944,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -17073,7 +16963,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -17085,7 +16974,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -17155,7 +17043,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -17170,7 +17057,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -17196,7 +17082,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -17211,7 +17096,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -17386,7 +17270,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -17401,7 +17284,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -17541,7 +17423,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -17553,7 +17434,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -17984,7 +17864,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -17996,7 +17875,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18124,7 +18002,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18136,7 +18013,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18284,7 +18160,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18297,7 +18172,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18369,7 +18243,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18381,7 +18254,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18416,7 +18288,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18428,7 +18299,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18468,7 +18338,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18481,7 +18350,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18504,7 +18372,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18516,7 +18383,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18727,7 +18593,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18739,7 +18604,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18760,7 +18624,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18772,7 +18635,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -18792,7 +18654,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -18804,7 +18665,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -19178,7 +19038,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -19190,7 +19049,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -19277,7 +19135,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -19289,7 +19146,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -20161,7 +20017,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -20179,7 +20034,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
@@ -20546,7 +20400,6 @@ targets:
   - test/core/util/mock_authorization_endpoint.h
   - test/core/util/mock_endpoint.h
   - test/core/util/parse_hexstring.h
-  - test/core/util/passthru_endpoint.h
   - test/core/util/resolve_localhost_ip46.h
   - test/core/util/slice_splitter.h
   - test/core/util/tracer_util.h
@@ -20558,7 +20411,6 @@ targets:
   - test/core/util/histogram.cc
   - test/core/util/mock_endpoint.cc
   - test/core/util/parse_hexstring.cc
-  - test/core/util/passthru_endpoint.cc
   - test/core/util/resolve_localhost_ip46.cc
   - test/core/util/slice_splitter.cc
   - test/core/util/tracer_util.cc
diff --git a/grpc.gyp b/grpc.gyp
index 6448b135e88..0e655558818 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -1794,7 +1794,6 @@
         'test/core/util/histogram.cc',
         'test/core/util/mock_endpoint.cc',
         'test/core/util/parse_hexstring.cc',
-        'test/core/util/passthru_endpoint.cc',
         'test/core/util/resolve_localhost_ip46.cc',
         'test/core/util/slice_splitter.cc',
         'test/core/util/tracer_util.cc',
@@ -1952,7 +1951,6 @@
         'test/core/util/histogram.cc',
         'test/core/util/mock_endpoint.cc',
         'test/core/util/parse_hexstring.cc',
-        'test/core/util/passthru_endpoint.cc',
         'test/core/util/resolve_localhost_ip46.cc',
         'test/core/util/slice_splitter.cc',
         'test/core/util/tracer_util.cc',
diff --git a/test/core/util/BUILD b/test/core/util/BUILD
index 2de9ece5fff..d8ace2ee84e 100644
--- a/test/core/util/BUILD
+++ b/test/core/util/BUILD
@@ -63,7 +63,6 @@ grpc_cc_library(
         "histogram.cc",
         "mock_endpoint.cc",
         "parse_hexstring.cc",
-        "passthru_endpoint.cc",
         "resolve_localhost_ip46.cc",
         "slice_splitter.cc",
         "tracer_util.cc",
@@ -77,7 +76,6 @@ grpc_cc_library(
         "mock_authorization_endpoint.h",
         "mock_endpoint.h",
         "parse_hexstring.h",
-        "passthru_endpoint.h",
         "resolve_localhost_ip46.h",
         "slice_splitter.h",
         "tracer_util.h",
diff --git a/test/core/util/passthru_endpoint.cc b/test/core/util/passthru_endpoint.cc
deleted file mode 100644
index cc37aabd278..00000000000
--- a/test/core/util/passthru_endpoint.cc
+++ /dev/null
@@ -1,525 +0,0 @@
-//
-//
-// 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.
-//
-//
-
-#include "test/core/util/passthru_endpoint.h"
-
-#include <string.h>
-
-#include <algorithm>
-#include <functional>
-#include <memory>
-#include <string>
-
-#include "absl/status/status.h"
-#include "absl/strings/str_format.h"
-#include "absl/strings/string_view.h"
-#include "absl/types/optional.h"
-
-#include <grpc/event_engine/event_engine.h>
-#include <grpc/slice.h>
-#include <grpc/slice_buffer.h>
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-
-#include "src/core/lib/event_engine/default_event_engine.h"
-#include "src/core/lib/gprpp/debug_location.h"
-#include "src/core/lib/gprpp/time.h"
-#include "src/core/lib/iomgr/closure.h"
-#include "src/core/lib/iomgr/error.h"
-#include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/iomgr/iomgr_fwd.h"
-
-using ::grpc_event_engine::experimental::EventEngine;
-using ::grpc_event_engine::experimental::GetDefaultEventEngine;
-
-typedef struct passthru_endpoint passthru_endpoint;
-
-typedef struct {
-  bool is_armed;
-  grpc_endpoint* ep;
-  grpc_slice_buffer* slices;
-  grpc_closure* cb;
-} pending_op;
-
-typedef struct {
-  absl::optional<EventEngine::TaskHandle> timer_handle;
-  uint64_t allowed_write_bytes;
-  uint64_t allowed_read_bytes;
-  std::vector<grpc_passthru_endpoint_channel_action> actions;
-  std::function<void()> on_complete;
-} grpc_passthru_endpoint_channel_effects;
-
-typedef struct {
-  grpc_endpoint base;
-  passthru_endpoint* parent;
-  grpc_slice_buffer read_buffer;
-  grpc_slice_buffer write_buffer;
-  grpc_slice_buffer* on_read_out;
-  grpc_closure* on_read;
-  pending_op pending_read_op;
-  pending_op pending_write_op;
-  uint64_t bytes_read_so_far;
-  uint64_t bytes_written_so_far;
-} half;
-
-struct passthru_endpoint {
-  gpr_mu mu;
-  int halves;
-  grpc_passthru_endpoint_stats* stats;
-  grpc_passthru_endpoint_channel_effects* channel_effects;
-  bool simulate_channel_actions;
-  bool shutdown;
-  half client;
-  half server;
-};
-
-static void do_pending_read_op_locked(half* m, grpc_error_handle error) {
-  GPR_ASSERT(m->pending_read_op.is_armed);
-  GPR_ASSERT(m->bytes_read_so_far <=
-             m->parent->channel_effects->allowed_read_bytes);
-  if (m->parent->shutdown) {
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, m->pending_read_op.cb,
-                            GRPC_ERROR_CREATE("Already shutdown"));
-    // Move any pending data into pending_read_op.slices so that it may be
-    // free'ed by the executing callback.
-    grpc_slice_buffer_move_into(&m->read_buffer, m->pending_read_op.slices);
-    m->pending_read_op.is_armed = false;
-    return;
-  }
-
-  if (m->bytes_read_so_far == m->parent->channel_effects->allowed_read_bytes) {
-    // Keep it in pending state.
-    return;
-  }
-  // This delayed processing should only be invoked when read_buffer has
-  // something in it.
-  GPR_ASSERT(m->read_buffer.count > 0);
-  uint64_t readable_length = std::min<uint64_t>(
-      m->read_buffer.length,
-      m->parent->channel_effects->allowed_read_bytes - m->bytes_read_so_far);
-  GPR_ASSERT(readable_length > 0);
-  grpc_slice_buffer_move_first(&m->read_buffer, readable_length,
-                               m->pending_read_op.slices);
-  grpc_core::ExecCtx::Run(DEBUG_LOCATION, m->pending_read_op.cb, error);
-  if (m->parent->simulate_channel_actions) {
-    m->bytes_read_so_far += readable_length;
-  }
-  m->pending_read_op.is_armed = false;
-}
-
-static void me_read(grpc_endpoint* ep, grpc_slice_buffer* slices,
-                    grpc_closure* cb, bool /*urgent*/,
-                    int /*min_progress_size*/) {
-  half* m = reinterpret_cast<half*>(ep);
-  gpr_mu_lock(&m->parent->mu);
-  if (m->parent->shutdown) {
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb,
-                            GRPC_ERROR_CREATE("Already shutdown"));
-  } else if (m->read_buffer.count > 0) {
-    GPR_ASSERT(!m->pending_read_op.is_armed);
-    GPR_ASSERT(!m->on_read);
-    m->pending_read_op.is_armed = true;
-    m->pending_read_op.cb = cb;
-    m->pending_read_op.ep = ep;
-    m->pending_read_op.slices = slices;
-    do_pending_read_op_locked(m, absl::OkStatus());
-  } else {
-    GPR_ASSERT(!m->pending_read_op.is_armed);
-    m->on_read = cb;
-    m->on_read_out = slices;
-  }
-  gpr_mu_unlock(&m->parent->mu);
-}
-
-// Copy src slice and split the copy at n bytes into two separate slices
-void grpc_slice_copy_split(grpc_slice src, uint64_t n, grpc_slice& split1,
-                           grpc_slice& split2) {
-  GPR_ASSERT(n <= GRPC_SLICE_LENGTH(src));
-  if (n == GRPC_SLICE_LENGTH(src)) {
-    split1 = grpc_slice_copy(src);
-    split2 = grpc_empty_slice();
-    return;
-  }
-  split1 = GRPC_SLICE_MALLOC(n);
-  memcpy(GRPC_SLICE_START_PTR(split1), GRPC_SLICE_START_PTR(src), n);
-  split2 = GRPC_SLICE_MALLOC(GRPC_SLICE_LENGTH(src) - n);
-  memcpy(GRPC_SLICE_START_PTR(split2), GRPC_SLICE_START_PTR(src) + n,
-         GRPC_SLICE_LENGTH(src) - n);
-}
-
-static half* other_half(half* h) {
-  if (h == &h->parent->client) return &h->parent->server;
-  return &h->parent->client;
-}
-
-static void do_pending_write_op_locked(half* m, grpc_error_handle error) {
-  GPR_ASSERT(m->pending_write_op.is_armed);
-  GPR_ASSERT(m->bytes_written_so_far <=
-             m->parent->channel_effects->allowed_write_bytes);
-  if (m->parent->shutdown) {
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, m->pending_write_op.cb,
-                            GRPC_ERROR_CREATE("Already shutdown"));
-    m->pending_write_op.is_armed = false;
-    grpc_slice_buffer_reset_and_unref(m->pending_write_op.slices);
-    return;
-  }
-  if (m->bytes_written_so_far ==
-      m->parent->channel_effects->allowed_write_bytes) {
-    // Keep it in pending state.
-    return;
-  }
-
-  half* other = other_half(m);
-  uint64_t max_writable =
-      std::min<uint64_t>(m->pending_write_op.slices->length,
-                         m->parent->channel_effects->allowed_write_bytes -
-                             m->bytes_written_so_far);
-  uint64_t max_readable = other->parent->channel_effects->allowed_read_bytes -
-                          other->bytes_read_so_far;
-  uint64_t immediate_bytes_read =
-      other->on_read != nullptr ? std::min<uint64_t>(max_readable, max_writable)
-                                : 0;
-
-  GPR_ASSERT(max_writable > 0);
-  GPR_ASSERT(max_readable >= 0);
-  // At the end of this process, we should have written max_writable bytes;
-  if (m->parent->simulate_channel_actions) {
-    m->bytes_written_so_far += max_writable;
-  }
-  // Estimate if the original write would still be pending at the end of this
-  // process
-  bool would_write_be_pending =
-      max_writable < m->pending_write_op.slices->length;
-  if (!m->parent->simulate_channel_actions) {
-    GPR_ASSERT(!would_write_be_pending);
-  }
-  grpc_slice_buffer* slices = m->pending_write_op.slices;
-  grpc_slice_buffer* dest =
-      other->on_read != nullptr ? other->on_read_out : &other->read_buffer;
-  while (max_writable > 0) {
-    grpc_slice slice = grpc_slice_buffer_take_first(slices);
-    uint64_t slice_length = GRPC_SLICE_LENGTH(slice);
-    GPR_ASSERT(slice_length > 0);
-    grpc_slice split1, split2;
-    uint64_t split_length = 0;
-    if (slice_length <= max_readable) {
-      split_length = std::min<uint64_t>(slice_length, max_writable);
-    } else if (max_readable > 0) {
-      // slice_length > max_readable
-      split_length = std::min<uint64_t>(max_readable, max_writable);
-    } else {
-      // slice_length still > max_readable but max_readable is 0.
-      // In this case put the bytes into other->read_buffer. During a future
-      // read if max_readable still remains zero at the time of read, the
-      // pending read logic will kick in.
-      dest = &other->read_buffer;
-      split_length = std::min<uint64_t>(slice_length, max_writable);
-    }
-
-    grpc_slice_copy_split(slice, split_length, split1, split2);
-    grpc_slice_unref(slice);
-    // Write a copy of the slice to the destination to be read
-    grpc_slice_buffer_add_indexed(dest, split1);
-    // Re-insert split2 into source for next iteration.
-    if (GRPC_SLICE_LENGTH(split2) > 0) {
-      grpc_slice_buffer_undo_take_first(slices, split2);
-    } else {
-      grpc_slice_unref(split2);
-    }
-
-    if (max_readable > 0) {
-      GPR_ASSERT(max_readable >= static_cast<uint64_t>(split_length));
-      max_readable -= split_length;
-    }
-
-    GPR_ASSERT(max_writable >= static_cast<uint64_t>(split_length));
-    max_writable -= split_length;
-  }
-
-  if (immediate_bytes_read > 0) {
-    GPR_ASSERT(!other->pending_read_op.is_armed);
-    if (m->parent->simulate_channel_actions) {
-      other->bytes_read_so_far += immediate_bytes_read;
-    }
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, other->on_read, error);
-    other->on_read = nullptr;
-  }
-
-  if (!would_write_be_pending) {
-    // No slices should be left
-    GPR_ASSERT(m->pending_write_op.slices->count == 0);
-    grpc_slice_buffer_reset_and_unref(m->pending_write_op.slices);
-    m->pending_write_op.is_armed = false;
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, m->pending_write_op.cb, error);
-  }
-}
-
-static void me_write(grpc_endpoint* ep, grpc_slice_buffer* slices,
-                     grpc_closure* cb, void* /*arg*/, int /*max_frame_size*/) {
-  half* m = reinterpret_cast<half*>(ep);
-  gpr_mu_lock(&m->parent->mu);
-  gpr_atm_full_fetch_add(&m->parent->stats->num_writes, (gpr_atm)1);
-  if (m->parent->shutdown) {
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb,
-                            GRPC_ERROR_CREATE("Endpoint already shutdown"));
-  } else {
-    GPR_ASSERT(!m->pending_write_op.is_armed);
-    // Copy slices into m->pending_write_op.slices
-    m->pending_write_op.slices = &m->write_buffer;
-    GPR_ASSERT(m->pending_write_op.slices->count == 0);
-    for (int i = 0; i < static_cast<int>(slices->count); i++) {
-      if (GRPC_SLICE_LENGTH(slices->slices[i]) > 0) {
-        grpc_slice_buffer_add_indexed(m->pending_write_op.slices,
-                                      grpc_slice_copy(slices->slices[i]));
-      }
-    }
-    if (m->pending_write_op.slices->count > 0) {
-      m->pending_write_op.is_armed = true;
-      m->pending_write_op.cb = cb;
-      m->pending_write_op.ep = ep;
-      do_pending_write_op_locked(m, absl::OkStatus());
-    } else {
-      // There is nothing to write. Schedule callback to be run right away.
-      grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, absl::OkStatus());
-    }
-  }
-  gpr_mu_unlock(&m->parent->mu);
-}
-
-void flush_pending_ops_locked(half* m, grpc_error_handle error) {
-  if (m->pending_read_op.is_armed) {
-    do_pending_read_op_locked(m, error);
-  }
-  if (m->pending_write_op.is_armed) {
-    do_pending_write_op_locked(m, error);
-  }
-}
-
-static void me_add_to_pollset(grpc_endpoint* /*ep*/,
-                              grpc_pollset* /*pollset*/) {}
-
-static void me_add_to_pollset_set(grpc_endpoint* /*ep*/,
-                                  grpc_pollset_set* /*pollset*/) {}
-
-static void me_delete_from_pollset_set(grpc_endpoint* /*ep*/,
-                                       grpc_pollset_set* /*pollset*/) {}
-
-static void shutdown_locked(half* m, grpc_error_handle why) {
-  m->parent->shutdown = true;
-  flush_pending_ops_locked(m, absl::OkStatus());
-  if (m->on_read) {
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, m->on_read,
-                            GRPC_ERROR_CREATE_REFERENCING("Shutdown", &why, 1));
-    m->on_read = nullptr;
-  }
-  m = other_half(m);
-  flush_pending_ops_locked(m, absl::OkStatus());
-  if (m->on_read) {
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, m->on_read,
-                            GRPC_ERROR_CREATE_REFERENCING("Shutdown", &why, 1));
-    m->on_read = nullptr;
-  }
-}
-
-static void me_shutdown(grpc_endpoint* ep, grpc_error_handle why) {
-  half* m = reinterpret_cast<half*>(ep);
-  gpr_mu_lock(&m->parent->mu);
-  shutdown_locked(m, why);
-  gpr_mu_unlock(&m->parent->mu);
-}
-
-void grpc_passthru_endpoint_destroy(passthru_endpoint* p) {
-  gpr_mu_destroy(&p->mu);
-  grpc_passthru_endpoint_stats_destroy(p->stats);
-  delete p->channel_effects;
-  grpc_slice_buffer_destroy(&p->client.read_buffer);
-  grpc_slice_buffer_destroy(&p->server.read_buffer);
-  grpc_slice_buffer_destroy(&p->client.write_buffer);
-  grpc_slice_buffer_destroy(&p->server.write_buffer);
-  gpr_free(p);
-}
-
-static void do_next_sched_channel_action(void* arg, grpc_error_handle error);
-
-static void me_destroy(grpc_endpoint* ep) {
-  passthru_endpoint* p = (reinterpret_cast<half*>(ep))->parent;
-  gpr_mu_lock(&p->mu);
-  if (0 == --p->halves && p->channel_effects->actions.empty()) {
-    // no pending channel actions exist
-    gpr_mu_unlock(&p->mu);
-    grpc_passthru_endpoint_destroy(p);
-  } else {
-    if (p->halves == 0 && p->simulate_channel_actions) {
-      if (p->channel_effects->timer_handle.has_value()) {
-        if (GetDefaultEventEngine()->Cancel(
-                *p->channel_effects->timer_handle)) {
-          gpr_mu_unlock(&p->mu);
-          // This will destroy the passthru endpoint so just return after that.
-          do_next_sched_channel_action(ep, absl::CancelledError());
-          return;
-        }
-        p->channel_effects->timer_handle.reset();
-      }
-    }
-    gpr_mu_unlock(&p->mu);
-  }
-}
-
-static absl::string_view me_get_peer(grpc_endpoint* ep) {
-  passthru_endpoint* p = (reinterpret_cast<half*>(ep))->parent;
-  return (reinterpret_cast<half*>(ep)) == &p->client
-             ? "fake:mock_client_endpoint"
-             : "fake:mock_server_endpoint";
-}
-
-static absl::string_view me_get_local_address(grpc_endpoint* ep) {
-  passthru_endpoint* p = (reinterpret_cast<half*>(ep))->parent;
-  return (reinterpret_cast<half*>(ep)) == &p->client
-             ? "fake:mock_client_endpoint"
-             : "fake:mock_server_endpoint";
-}
-
-static int me_get_fd(grpc_endpoint* /*ep*/) { return -1; }
-
-static bool me_can_track_err(grpc_endpoint* /*ep*/) { return false; }
-
-static const grpc_endpoint_vtable vtable = {
-    me_read,
-    me_write,
-    me_add_to_pollset,
-    me_add_to_pollset_set,
-    me_delete_from_pollset_set,
-    me_shutdown,
-    me_destroy,
-    me_get_peer,
-    me_get_local_address,
-    me_get_fd,
-    me_can_track_err,
-};
-
-static void half_init(half* m, passthru_endpoint* parent,
-                      const char* half_name) {
-  m->base.vtable = &vtable;
-  m->parent = parent;
-  grpc_slice_buffer_init(&m->read_buffer);
-  grpc_slice_buffer_init(&m->write_buffer);
-  m->pending_write_op.slices = nullptr;
-  m->on_read = nullptr;
-  m->bytes_read_so_far = 0;
-  m->bytes_written_so_far = 0;
-  m->pending_write_op.is_armed = false;
-  m->pending_read_op.is_armed = false;
-  std::string name =
-      absl::StrFormat("passthru_endpoint_%s_%p", half_name, parent);
-}
-
-void grpc_passthru_endpoint_create(grpc_endpoint** client,
-                                   grpc_endpoint** server,
-                                   grpc_passthru_endpoint_stats* stats,
-                                   bool simulate_channel_actions) {
-  passthru_endpoint* m =
-      static_cast<passthru_endpoint*>(gpr_malloc(sizeof(*m)));
-  m->halves = 2;
-  m->shutdown = false;
-  if (stats == nullptr) {
-    m->stats = grpc_passthru_endpoint_stats_create();
-  } else {
-    gpr_ref(&stats->refs);
-    m->stats = stats;
-  }
-  m->channel_effects = new grpc_passthru_endpoint_channel_effects();
-  m->simulate_channel_actions = simulate_channel_actions;
-  if (!simulate_channel_actions) {
-    m->channel_effects->allowed_read_bytes = UINT64_MAX;
-    m->channel_effects->allowed_write_bytes = UINT64_MAX;
-  }
-  half_init(&m->client, m, "client");
-  half_init(&m->server, m, "server");
-  gpr_mu_init(&m->mu);
-  *client = &m->client.base;
-  *server = &m->server.base;
-}
-
-grpc_passthru_endpoint_stats* grpc_passthru_endpoint_stats_create() {
-  grpc_passthru_endpoint_stats* stats =
-      static_cast<grpc_passthru_endpoint_stats*>(
-          gpr_malloc(sizeof(grpc_passthru_endpoint_stats)));
-  memset(stats, 0, sizeof(*stats));
-  gpr_ref_init(&stats->refs, 1);
-  return stats;
-}
-
-void grpc_passthru_endpoint_stats_destroy(grpc_passthru_endpoint_stats* stats) {
-  if (gpr_unref(&stats->refs)) {
-    gpr_free(stats);
-  }
-}
-
-static void sched_next_channel_action_locked(half* m);
-
-static void do_next_sched_channel_action(void* arg, grpc_error_handle error) {
-  half* m = reinterpret_cast<half*>(arg);
-  gpr_mu_lock(&m->parent->mu);
-  GPR_ASSERT(!m->parent->channel_effects->actions.empty());
-  if (m->parent->halves == 0) {
-    gpr_mu_unlock(&m->parent->mu);
-    grpc_passthru_endpoint_destroy(m->parent);
-    return;
-  }
-  auto curr_action = m->parent->channel_effects->actions[0];
-  m->parent->channel_effects->actions.erase(
-      m->parent->channel_effects->actions.begin());
-  m->parent->channel_effects->allowed_read_bytes +=
-      curr_action.add_n_readable_bytes;
-  m->parent->channel_effects->allowed_write_bytes +=
-      curr_action.add_n_writable_bytes;
-  flush_pending_ops_locked(m, error);
-  flush_pending_ops_locked(other_half(m), error);
-  sched_next_channel_action_locked(m);
-  gpr_mu_unlock(&m->parent->mu);
-}
-
-static void sched_next_channel_action_locked(half* m) {
-  if (m->parent->channel_effects->actions.empty()) {
-    grpc_error_handle err = GRPC_ERROR_CREATE("Channel actions complete");
-    shutdown_locked(m, err);
-    return;
-  }
-  m->parent->channel_effects->timer_handle = GetDefaultEventEngine()->RunAfter(
-      grpc_core::Duration::Milliseconds(
-          m->parent->channel_effects->actions[0].wait_ms),
-      [m] {
-        grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
-        grpc_core::ExecCtx exec_ctx;
-        do_next_sched_channel_action(m, absl::OkStatus());
-      });
-}
-
-void start_scheduling_grpc_passthru_endpoint_channel_effects(
-    grpc_endpoint* ep,
-    const std::vector<grpc_passthru_endpoint_channel_action>& actions) {
-  half* m = reinterpret_cast<half*>(ep);
-  gpr_mu_lock(&m->parent->mu);
-  if (!m->parent->simulate_channel_actions || m->parent->shutdown) {
-    gpr_mu_unlock(&m->parent->mu);
-    return;
-  }
-  m->parent->channel_effects->actions = actions;
-  sched_next_channel_action_locked(m);
-  gpr_mu_unlock(&m->parent->mu);
-}
diff --git a/test/core/util/passthru_endpoint.h b/test/core/util/passthru_endpoint.h
deleted file mode 100644
index 4fc94753e70..00000000000
--- a/test/core/util/passthru_endpoint.h
+++ /dev/null
@@ -1,58 +0,0 @@
-//
-//
-// 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.
-//
-//
-
-#ifndef GRPC_TEST_CORE_UTIL_PASSTHRU_ENDPOINT_H
-#define GRPC_TEST_CORE_UTIL_PASSTHRU_ENDPOINT_H
-
-#include <stdint.h>
-
-#include <vector>
-
-#include <grpc/support/atm.h>
-#include <grpc/support/sync.h>
-
-#include "src/core/lib/iomgr/endpoint.h"
-
-// The struct is refcounted, always use grpc_passthru_endpoint_stats_create and
-// grpc_passthru_endpoint_stats_destroy, rather then embedding it in your
-// objects by value.
-typedef struct {
-  gpr_refcount refs;
-  gpr_atm num_writes;
-} grpc_passthru_endpoint_stats;
-
-typedef struct {
-  uint64_t wait_ms;
-  uint64_t add_n_writable_bytes;
-  uint64_t add_n_readable_bytes;
-} grpc_passthru_endpoint_channel_action;
-
-void grpc_passthru_endpoint_create(grpc_endpoint** client,
-                                   grpc_endpoint** server,
-                                   grpc_passthru_endpoint_stats* stats,
-                                   bool simulate_channel_actions = false);
-
-grpc_passthru_endpoint_stats* grpc_passthru_endpoint_stats_create();
-
-void grpc_passthru_endpoint_stats_destroy(grpc_passthru_endpoint_stats* stats);
-
-void start_scheduling_grpc_passthru_endpoint_channel_effects(
-    grpc_endpoint* ep,
-    const std::vector<grpc_passthru_endpoint_channel_action>& actions);
-
-#endif  // GRPC_TEST_CORE_UTIL_PASSTHRU_ENDPOINT_H
diff --git a/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc b/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
index 06e40752940..38480c6463b 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
@@ -52,34 +52,22 @@ static void StreamingPingPongArgs(benchmark::internal::Benchmark* b) {
   }
 }
 
-BENCHMARK_TEMPLATE(BM_StreamingPingPong, InProcessCHTTP2, NoOpMutator,
-                   NoOpMutator)
-    ->Apply(StreamingPingPongArgs);
 BENCHMARK_TEMPLATE(BM_StreamingPingPong, TCP, NoOpMutator, NoOpMutator)
     ->Apply(StreamingPingPongArgs);
 BENCHMARK_TEMPLATE(BM_StreamingPingPong, InProcess, NoOpMutator, NoOpMutator)
     ->Apply(StreamingPingPongArgs);
 
-BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, InProcessCHTTP2, NoOpMutator,
-                   NoOpMutator)
-    ->Range(0, kMaxMessageSize);
 BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, TCP, NoOpMutator, NoOpMutator)
     ->Range(0, kMaxMessageSize);
 BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, InProcess, NoOpMutator,
                    NoOpMutator)
     ->Range(0, kMaxMessageSize);
 
-BENCHMARK_TEMPLATE(BM_StreamingPingPong, MinInProcessCHTTP2, NoOpMutator,
-                   NoOpMutator)
-    ->Apply(StreamingPingPongArgs);
 BENCHMARK_TEMPLATE(BM_StreamingPingPong, MinTCP, NoOpMutator, NoOpMutator)
     ->Apply(StreamingPingPongArgs);
 BENCHMARK_TEMPLATE(BM_StreamingPingPong, MinInProcess, NoOpMutator, NoOpMutator)
     ->Apply(StreamingPingPongArgs);
 
-BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, MinInProcessCHTTP2, NoOpMutator,
-                   NoOpMutator)
-    ->Range(0, kMaxMessageSize);
 BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, MinTCP, NoOpMutator, NoOpMutator)
     ->Range(0, kMaxMessageSize);
 BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, MinInProcess, NoOpMutator,
@@ -106,12 +94,6 @@ static void StreamingPingPongWithCoalescingApiArgs(
   }
 }
 
-BENCHMARK_TEMPLATE(BM_StreamingPingPongWithCoalescingApi, InProcessCHTTP2,
-                   NoOpMutator, NoOpMutator)
-    ->Apply(StreamingPingPongWithCoalescingApiArgs);
-BENCHMARK_TEMPLATE(BM_StreamingPingPongWithCoalescingApi, MinInProcessCHTTP2,
-                   NoOpMutator, NoOpMutator)
-    ->Apply(StreamingPingPongWithCoalescingApiArgs);
 BENCHMARK_TEMPLATE(BM_StreamingPingPongWithCoalescingApi, InProcess,
                    NoOpMutator, NoOpMutator)
     ->Apply(StreamingPingPongWithCoalescingApiArgs);
diff --git a/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc b/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
index a4d5a42b7fd..6eae11f4be1 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
@@ -35,24 +35,18 @@ BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, UDS)
     ->Range(0, 128 * 1024 * 1024);
 BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, InProcess)
     ->Range(0, 128 * 1024 * 1024);
-BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, InProcessCHTTP2)
-    ->Range(0, 128 * 1024 * 1024);
 BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, TCP)
     ->Range(0, 128 * 1024 * 1024);
 BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, UDS)
     ->Range(0, 128 * 1024 * 1024);
 BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, InProcess)
     ->Range(0, 128 * 1024 * 1024);
-BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, InProcessCHTTP2)
-    ->Range(0, 128 * 1024 * 1024);
 BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, MinTCP)->Arg(0);
 BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, MinUDS)->Arg(0);
 BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, MinInProcess)->Arg(0);
-BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, MinInProcessCHTTP2)->Arg(0);
 BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, MinTCP)->Arg(0);
 BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, MinUDS)->Arg(0);
 BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, MinInProcess)->Arg(0);
-BENCHMARK_TEMPLATE(BM_PumpStreamServerToClient, MinInProcessCHTTP2)->Arg(0);
 
 }  // namespace testing
 }  // namespace grpc
diff --git a/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc b/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
index b587a75d2e4..290b095cd3c 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
@@ -56,61 +56,6 @@ BENCHMARK_TEMPLATE(BM_UnaryPingPong, SockPair, NoOpMutator, NoOpMutator)
     ->Args({0, 0});
 BENCHMARK_TEMPLATE(BM_UnaryPingPong, MinSockPair, NoOpMutator, NoOpMutator)
     ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator, NoOpMutator)
-    ->Apply(SweepSizesArgs);
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, MinInProcessCHTTP2, NoOpMutator,
-                   NoOpMutator)
-    ->Apply(SweepSizesArgs);
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomBinaryMetadata<10>, 1>, NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomBinaryMetadata<31>, 1>, NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomBinaryMetadata<100>, 1>,
-                   NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomBinaryMetadata<10>, 2>, NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomBinaryMetadata<31>, 2>, NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomBinaryMetadata<100>, 2>,
-                   NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator,
-                   Server_AddInitialMetadata<RandomBinaryMetadata<10>, 1>)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator,
-                   Server_AddInitialMetadata<RandomBinaryMetadata<31>, 1>)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator,
-                   Server_AddInitialMetadata<RandomBinaryMetadata<100>, 1>)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomAsciiMetadata<10>, 1>, NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomAsciiMetadata<31>, 1>, NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2,
-                   Client_AddMetadata<RandomAsciiMetadata<100>, 1>, NoOpMutator)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator,
-                   Server_AddInitialMetadata<RandomAsciiMetadata<10>, 1>)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator,
-                   Server_AddInitialMetadata<RandomAsciiMetadata<31>, 1>)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator,
-                   Server_AddInitialMetadata<RandomAsciiMetadata<100>, 1>)
-    ->Args({0, 0});
-BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcessCHTTP2, NoOpMutator,
-                   Server_AddInitialMetadata<RandomAsciiMetadata<10>, 100>)
-    ->Args({0, 0});
 BENCHMARK_TEMPLATE(BM_UnaryPingPong, InProcess,
                    Client_AddMetadata<RandomBinaryMetadata<10>, 1>, NoOpMutator)
     ->Args({0, 0});
diff --git a/test/cpp/microbenchmarks/fullstack_fixtures.h b/test/cpp/microbenchmarks/fullstack_fixtures.h
index 6c395b989bd..ca3b49e0706 100644
--- a/test/cpp/microbenchmarks/fullstack_fixtures.h
+++ b/test/cpp/microbenchmarks/fullstack_fixtures.h
@@ -40,7 +40,6 @@
 #include "src/core/lib/surface/completion_queue.h"
 #include "src/core/lib/surface/server.h"
 #include "src/cpp/client/create_channel_internal.h"
-#include "test/core/util/passthru_endpoint.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/microbenchmarks/helpers.h"
@@ -254,45 +253,6 @@ class SockPair : public EndpointPairFixture {
                             fixture_configuration) {}
 };
 
-// Use InProcessCHTTP2 instead. This class (with stats as an explicit parameter)
-// is here only to be able to initialize both the base class and stats_ with the
-// same stats instance without accessing the stats_ fields before the object is
-// properly initialized.
-class InProcessCHTTP2WithExplicitStats : public EndpointPairFixture {
- public:
-  InProcessCHTTP2WithExplicitStats(
-      Service* service, grpc_passthru_endpoint_stats* stats,
-      const FixtureConfiguration& fixture_configuration)
-      : EndpointPairFixture(service, MakeEndpoints(stats),
-                            fixture_configuration),
-        stats_(stats) {}
-
-  ~InProcessCHTTP2WithExplicitStats() override {
-    if (stats_ != nullptr) {
-      grpc_passthru_endpoint_stats_destroy(stats_);
-    }
-  }
-
- private:
-  grpc_passthru_endpoint_stats* stats_;
-
-  static grpc_endpoint_pair MakeEndpoints(grpc_passthru_endpoint_stats* stats) {
-    grpc_endpoint_pair p;
-    grpc_passthru_endpoint_create(&p.client, &p.server, stats);
-    return p;
-  }
-};
-
-class InProcessCHTTP2 : public InProcessCHTTP2WithExplicitStats {
- public:
-  explicit InProcessCHTTP2(Service* service,
-                           const FixtureConfiguration& fixture_configuration =
-                               FixtureConfiguration())
-      : InProcessCHTTP2WithExplicitStats(service,
-                                         grpc_passthru_endpoint_stats_create(),
-                                         fixture_configuration) {}
-};
-
 ////////////////////////////////////////////////////////////////////////////////
 // Minimal stack fixtures
 
@@ -319,7 +279,6 @@ typedef MinStackize<TCP> MinTCP;
 typedef MinStackize<UDS> MinUDS;
 typedef MinStackize<InProcess> MinInProcess;
 typedef MinStackize<SockPair> MinSockPair;
-typedef MinStackize<InProcessCHTTP2> MinInProcessCHTTP2;
 
 }  // namespace testing
 }  // namespace grpc