[Startup Tracing] Add --trace-config-file flag

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 591 matching lines @@
       'sync_driver/non_blocking_data_type_controller_unittest.cc',
       'sync_driver/non_ui_data_type_controller_unittest.cc',
       'sync_driver/shared_change_processor_unittest.cc',
       'sync_driver/sync_policy_handler_unittest.cc',
       'sync_driver/sync_prefs_unittest.cc',
       'sync_driver/sync_stopped_reporter_unittest.cc',
       'sync_driver/system_encryptor_unittest.cc',
       'sync_driver/tab_node_pool_unittest.cc',
       'sync_driver/ui_data_type_controller_unittest.cc',
     ],
+    'tracing_unittest_sources': [
+      'tracing/trace_config_file_unittest.cc',
+    ],
     'translate_unittest_sources': [
       'translate/core/browser/language_state_unittest.cc',
       'translate/core/browser/translate_browser_metrics_unittest.cc',
       'translate/core/browser/translate_language_list_unittest.cc',
       'translate/core/browser/translate_prefs_unittest.cc',
       'translate/core/browser/translate_script_unittest.cc',
       'translate/core/common/translate_metrics_unittest.cc',
       'translate/core/common/translate_util_unittest.cc',
       'translate/core/language_detection/language_detection_util_unittest.cc',
       # TODO(GYP) bug 523060: these translate tests on iOS.
@@ skipping 523 matching lines @@
           'dependencies!': [
             'components.gyp:storage_monitor',
             'components.gyp:storage_monitor_test_support',
             'components.gyp:web_modal',
             'components.gyp:web_modal_test_support',
           ],
         }],
         ['OS != "android"', {
           'sources': [
             '<@(invalidation_unittest_sources)',
+            '<@(tracing_unittest_sources)',
+          ],
+          'dependencies': [
+            'tracing.gyp:tracing',
           ],
         }],
         ['OS != "ios" and OS != "android"', {
           'sources': [
             '<@(audio_modem_unittest_sources)',
             '<@(copresence_unittest_sources)',
             '<@(feedback_unittest_sources)',
             '<@(proximity_auth_unittest_sources)',
           ],
           'sources!': [
@@ skipping 436 matching lines @@
               'invalidation/impl/android/junit/',
               'policy/android/junit/'
             ],
           },
           'includes': [ '../build/host_jar.gypi' ],
          },
       ],
     }],
   ],
 }