Revert "Channel Tracing Implementation; Part 1"
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56dcb46..77e84a0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -532,7 +532,6 @@
 add_dependencies(buildtests_cxx byte_stream_test)
 add_dependencies(buildtests_cxx channel_arguments_test)
 add_dependencies(buildtests_cxx channel_filter_test)
-add_dependencies(buildtests_cxx channel_trace_test)
 add_dependencies(buildtests_cxx check_gcp_environment_linux_test)
 add_dependencies(buildtests_cxx check_gcp_environment_windows_test)
 add_dependencies(buildtests_cxx chttp2_settings_timeout_test)
@@ -856,13 +855,10 @@
   src/core/lib/channel/channel_args.cc
   src/core/lib/channel/channel_stack.cc
   src/core/lib/channel/channel_stack_builder.cc
-  src/core/lib/channel/channel_trace.cc
-  src/core/lib/channel/channel_trace_registry.cc
   src/core/lib/channel/connected_channel.cc
   src/core/lib/channel/handshaker.cc
   src/core/lib/channel/handshaker_factory.cc
   src/core/lib/channel/handshaker_registry.cc
-  src/core/lib/channel/status_util.cc
   src/core/lib/compression/compression.cc
   src/core/lib/compression/compression_internal.cc
   src/core/lib/compression/message_compress.cc
@@ -1111,6 +1107,7 @@
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
+  src/core/ext/filters/client_channel/status_util.cc
   src/core/ext/filters/client_channel/subchannel.cc
   src/core/ext/filters/client_channel/subchannel_index.cc
   src/core/ext/filters/client_channel/uri_parser.cc
@@ -1244,13 +1241,10 @@
   src/core/lib/channel/channel_args.cc
   src/core/lib/channel/channel_stack.cc
   src/core/lib/channel/channel_stack_builder.cc
-  src/core/lib/channel/channel_trace.cc
-  src/core/lib/channel/channel_trace_registry.cc
   src/core/lib/channel/connected_channel.cc
   src/core/lib/channel/handshaker.cc
   src/core/lib/channel/handshaker_factory.cc
   src/core/lib/channel/handshaker_registry.cc
-  src/core/lib/channel/status_util.cc
   src/core/lib/compression/compression.cc
   src/core/lib/compression/compression_internal.cc
   src/core/lib/compression/message_compress.cc
@@ -1437,6 +1431,7 @@
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
+  src/core/ext/filters/client_channel/status_util.cc
   src/core/ext/filters/client_channel/subchannel.cc
   src/core/ext/filters/client_channel/subchannel_index.cc
   src/core/ext/filters/client_channel/uri_parser.cc
@@ -1623,13 +1618,10 @@
   src/core/lib/channel/channel_args.cc
   src/core/lib/channel/channel_stack.cc
   src/core/lib/channel/channel_stack_builder.cc
-  src/core/lib/channel/channel_trace.cc
-  src/core/lib/channel/channel_trace_registry.cc
   src/core/lib/channel/connected_channel.cc
   src/core/lib/channel/handshaker.cc
   src/core/lib/channel/handshaker_factory.cc
   src/core/lib/channel/handshaker_registry.cc
-  src/core/lib/channel/status_util.cc
   src/core/lib/compression/compression.cc
   src/core/lib/compression/compression_internal.cc
   src/core/lib/compression/message_compress.cc
@@ -1785,6 +1777,7 @@
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
+  src/core/ext/filters/client_channel/status_util.cc
   src/core/ext/filters/client_channel/subchannel.cc
   src/core/ext/filters/client_channel/subchannel_index.cc
   src/core/ext/filters/client_channel/uri_parser.cc
@@ -1925,13 +1918,10 @@
   src/core/lib/channel/channel_args.cc
   src/core/lib/channel/channel_stack.cc
   src/core/lib/channel/channel_stack_builder.cc
-  src/core/lib/channel/channel_trace.cc
-  src/core/lib/channel/channel_trace_registry.cc
   src/core/lib/channel/connected_channel.cc
   src/core/lib/channel/handshaker.cc
   src/core/lib/channel/handshaker_factory.cc
   src/core/lib/channel/handshaker_registry.cc
-  src/core/lib/channel/status_util.cc
   src/core/lib/compression/compression.cc
   src/core/lib/compression/compression_internal.cc
   src/core/lib/compression/message_compress.cc
@@ -2087,6 +2077,7 @@
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
+  src/core/ext/filters/client_channel/status_util.cc
   src/core/ext/filters/client_channel/subchannel.cc
   src/core/ext/filters/client_channel/subchannel_index.cc
   src/core/ext/filters/client_channel/uri_parser.cc
@@ -2207,13 +2198,10 @@
   src/core/lib/channel/channel_args.cc
   src/core/lib/channel/channel_stack.cc
   src/core/lib/channel/channel_stack_builder.cc
-  src/core/lib/channel/channel_trace.cc
-  src/core/lib/channel/channel_trace_registry.cc
   src/core/lib/channel/connected_channel.cc
   src/core/lib/channel/handshaker.cc
   src/core/lib/channel/handshaker_factory.cc
   src/core/lib/channel/handshaker_registry.cc
-  src/core/lib/channel/status_util.cc
   src/core/lib/compression/compression.cc
   src/core/lib/compression/compression_internal.cc
   src/core/lib/compression/message_compress.cc
@@ -2402,6 +2390,7 @@
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
+  src/core/ext/filters/client_channel/status_util.cc
   src/core/ext/filters/client_channel/subchannel.cc
   src/core/ext/filters/client_channel/subchannel_index.cc
   src/core/ext/filters/client_channel/uri_parser.cc
@@ -3023,13 +3012,10 @@
   src/core/lib/channel/channel_args.cc
   src/core/lib/channel/channel_stack.cc
   src/core/lib/channel/channel_stack_builder.cc
-  src/core/lib/channel/channel_trace.cc
-  src/core/lib/channel/channel_trace_registry.cc
   src/core/lib/channel/connected_channel.cc
   src/core/lib/channel/handshaker.cc
   src/core/lib/channel/handshaker_factory.cc
   src/core/lib/channel/handshaker_registry.cc
-  src/core/lib/channel/status_util.cc
   src/core/lib/compression/compression.cc
   src/core/lib/compression/compression_internal.cc
   src/core/lib/compression/message_compress.cc
@@ -3190,6 +3176,7 @@
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
+  src/core/ext/filters/client_channel/status_util.cc
   src/core/ext/filters/client_channel/subchannel.cc
   src/core/ext/filters/client_channel/subchannel_index.cc
   src/core/ext/filters/client_channel/uri_parser.cc
@@ -3694,10 +3681,6 @@
 
 if (gRPC_BUILD_CODEGEN)
 add_library(grpc++_test_util
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.pb.cc
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.grpc.pb.cc
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.pb.h
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.grpc.pb.h
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/health/v1/health.pb.cc
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/health/v1/health.grpc.pb.cc
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/health/v1/health.pb.h
@@ -3717,7 +3700,6 @@
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h
   test/cpp/end2end/test_service_impl.cc
   test/cpp/util/byte_buffer_proto_helper.cc
-  test/cpp/util/channel_trace_proto_helper.cc
   test/cpp/util/create_test_channel.cc
   test/cpp/util/string_ref_helper.cc
   test/cpp/util/subprocess.cc
@@ -3737,9 +3719,6 @@
 endif()
 
 protobuf_generate_grpc_cpp(
-  src/proto/grpc/channelz/channelz.proto
-)
-protobuf_generate_grpc_cpp(
   src/proto/grpc/health/v1/health.proto
 )
 protobuf_generate_grpc_cpp(
@@ -10149,51 +10128,6 @@
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
-add_executable(channel_trace_test
-  test/core/channel/channel_trace_test.cc
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.pb.cc
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.grpc.pb.cc
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.pb.h
-  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/channelz/channelz.grpc.pb.h
-  third_party/googletest/googletest/src/gtest-all.cc
-  third_party/googletest/googlemock/src/gmock-all.cc
-)
-
-protobuf_generate_grpc_cpp(
-  src/proto/grpc/channelz/channelz.proto
-)
-
-target_include_directories(channel_trace_test
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PRIVATE ${_gRPC_SSL_INCLUDE_DIR}
-  PRIVATE ${_gRPC_PROTOBUF_INCLUDE_DIR}
-  PRIVATE ${_gRPC_ZLIB_INCLUDE_DIR}
-  PRIVATE ${_gRPC_BENCHMARK_INCLUDE_DIR}
-  PRIVATE ${_gRPC_CARES_INCLUDE_DIR}
-  PRIVATE ${_gRPC_GFLAGS_INCLUDE_DIR}
-  PRIVATE third_party/googletest/googletest/include
-  PRIVATE third_party/googletest/googletest
-  PRIVATE third_party/googletest/googlemock/include
-  PRIVATE third_party/googletest/googlemock
-  PRIVATE ${_gRPC_PROTO_GENS_DIR}
-)
-
-target_link_libraries(channel_trace_test
-  ${_gRPC_PROTOBUF_LIBRARIES}
-  ${_gRPC_ALLTARGETS_LIBRARIES}
-  grpc_test_util
-  grpc++_test_util
-  grpc++
-  grpc
-  gpr_test_util
-  gpr
-  ${_gRPC_GFLAGS_LIBRARIES}
-)
-
-endif (gRPC_BUILD_TESTS)
-if (gRPC_BUILD_TESTS)
-
 add_executable(check_gcp_environment_linux_test
   test/core/security/check_gcp_environment_linux_test.cc
   third_party/googletest/googletest/src/gtest-all.cc
@@ -13139,7 +13073,7 @@
 if (gRPC_BUILD_TESTS)
 
 add_executable(status_util_test
-  test/core/channel/status_util_test.cc
+  test/core/client_channel/status_util_test.cc
   third_party/googletest/googletest/src/gtest-all.cc
   third_party/googletest/googlemock/src/gmock-all.cc
 )