Componentize //chrome/browser/prefs/tracked.

chrome/chrome_tests_unit.gypi

 # Copyright 2012 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': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 170 matching lines @@
       'browser/predictors/resource_prefetch_predictor_unittest.cc',
       'browser/predictors/resource_prefetcher_unittest.cc',
       'browser/prefs/chrome_pref_service_unittest.cc',
       'browser/prefs/command_line_pref_store_unittest.cc',
       'browser/prefs/incognito_mode_prefs_unittest.cc',
       'browser/prefs/leveldb_pref_store_unittest.cc',
       'browser/prefs/pref_model_associator_unittest.cc',
       'browser/prefs/prefs_syncable_service_unittest.cc',
       'browser/prefs/profile_pref_store_manager_unittest.cc',
       'browser/prefs/session_startup_pref_unittest.cc',
-      'browser/prefs/tracked/device_id_unittest.cc',
-      'browser/prefs/tracked/mock_validation_delegate.cc',
-      'browser/prefs/tracked/mock_validation_delegate.h',
-      'browser/prefs/tracked/pref_hash_calculator_unittest.cc',
-      'browser/prefs/tracked/pref_hash_filter_unittest.cc',
-      'browser/prefs/tracked/pref_hash_store_impl_unittest.cc',
-      'browser/prefs/tracked/pref_service_hash_store_contents_unittest.cc',
-      'browser/prefs/tracked/segregated_pref_store_unittest.cc',
-      'browser/prefs/tracked/tracked_preferences_migration_unittest.cc',
       'browser/prerender/prerender_history_unittest.cc',
       'browser/prerender/prerender_resource_throttle_unittest.cc',
       'browser/prerender/prerender_unittest.cc',
       'browser/prerender/prerender_util_unittest.cc',
       'browser/private_working_set_snapshot_win_unittest.cc',
       'browser/process_info_snapshot_mac_unittest.cc',
       'browser/process_singleton_win_unittest.cc',
       'browser/profiles/file_path_verifier_win_unittest.cc',
       'browser/profiles/gaia_info_update_service_unittest.cc',
       'browser/profiles/profile_avatar_icon_util_unittest.cc',
@@ skipping 360 matching lines @@
       'test/base/v8_unit_test.h',
       'test/data/unit/framework_unittest.gtestjs',
       'test/logging/win/mof_data_parser_unittest.cc',
       'utility/chrome_content_utility_client_unittest.cc',
       'utility/cloud_print/pwg_encoder_unittest.cc',
 
       # Duplicate these tests here because PathService has more items in
       # unit_tests than in base_unittests.
       '../base/path_service_unittest.cc',
 
+      '../components/prefs_tracker/mock_validation_delegate.cc',

[blundell, 2015/07/24 09:44:47]

This file should go into a prefs_tracker_test_support target in
prefs_tracker.gypi, which this target should depend on.

[Jitu( very slow this week), 2015/07/27 15:49:30]

Done.

+      '../components/prefs_tracker/mock_validation_delegate.h',
       '../components/search_engines/template_url_fetcher_unittest.cc',
       '../components/search_engines/template_url_parser_unittest.cc',
       '../components/search_engines/template_url_service_sync_unittest.cc',
       '../components/search_engines/template_url_service_unittest.cc',
 
       '../testing/gtest_mac_unittest.mm',
       '../third_party/zlib/google/zip_reader_unittest.cc',
       '../third_party/zlib/google/zip_unittest.cc',
       '../tools/json_schema_compiler/test/additional_properties_unittest.cc',
       '../tools/json_schema_compiler/test/any_unittest.cc',
@@ skipping 2302 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }