Reland of tracing v2: Introduce TraceBufferWriter (https://codereview.chromium.org/2196663002)

components/components_tests.gyp

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 931 matching lines @@
     'syncable_prefs_unittest_sources': [
       'syncable_prefs/pref_model_associator_unittest.cc',
       'syncable_prefs/pref_service_syncable_unittest.cc',
     ],
     'tracing_unittest_sources': [
       'tracing/browser/trace_config_file_unittest.cc',
       'tracing/common/graphics_memory_dump_provider_android_unittest.cc',
       'tracing/common/process_metrics_memory_dump_provider_unittest.cc',
       'tracing/core/proto_utils_unittest.cc',
       'tracing/core/proto_zero_message_unittest.cc',
+      'tracing/core/trace_buffer_writer_unittest.cc',
       'tracing/core/trace_ring_buffer_unittest.cc',
       'tracing/core/scattered_stream_writer_unittest.cc',
       'tracing/test/fake_scattered_buffer.cc',
       'tracing/test/proto_zero_generation_unittest.cc',
     ],
     'translate_unittest_sources': [
       'translate/core/browser/language_state_unittest.cc',
       'translate/core/browser/mock_translate_driver.cc',
       'translate/core/browser/translate_browser_metrics_unittest.cc',
       'translate/core/browser/translate_language_list_unittest.cc',
@@ skipping 511 matching lines @@
             'components.gyp:test_database_manager',
             'components.gyp:url_matcher',
             'components.gyp:visitedlink_browser',
             'components.gyp:visitedlink_renderer',
             'components.gyp:wallpaper',
             'components.gyp:web_cache_browser',
             'components.gyp:web_modal',
             'components.gyp:web_modal_test_support',
             'components.gyp:zoom',
             'test_runner/test_runner.gyp:test_runner',
+            'tracing.gyp:golden_protos_for_tests',
             'tracing.gyp:proto_zero_testing_messages',
             'tracing.gyp:tracing',
             'webcrypto/webcrypto.gyp:webcrypto',
             '../third_party/boringssl/boringssl.gyp:boringssl',
             '../third_party/re2/re2.gyp:re2',
           ],
           'conditions': [
             ['OS=="android"', {
               'sources' : [
                 '<@(web_restrictions_unittest_sources)',
@@ skipping 640 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }