Take 2 at browser_sync::ExtensionsActivityMonitor....

chrome/chrome.gyp

 # Copyright (c) 2009 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': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
@@ skipping 5192 matching lines @@
           'dependencies': [
             '../build/linux/system.gyp:gtk'
           ],
         }],
       ],
     },
     {
       'target_name': 'sync_unit_tests',
       'type': 'executable',
       'sources': [
+        'app/breakpad_mac_stubs.mm',
+        'app/keystone_glue.mm',
         'browser/sync/engine/all_status_unittest.cc',
         'browser/sync/engine/apply_updates_command_unittest.cc',
         'browser/sync/engine/auth_watcher_unittest.cc',
         'browser/sync/engine/net/gaia_authenticator_unittest.cc',
         'browser/sync/engine/syncer_proto_util_unittest.cc',
         'browser/sync/engine/syncer_thread_unittest.cc',
         'browser/sync/engine/syncer_unittest.cc',
         'browser/sync/engine/syncproto_unittest.cc',
         'browser/sync/notifier/listener/talk_mediator_unittest.cc',
         'browser/sync/syncable/syncable_id_unittest.cc',
         'browser/sync/syncable/syncable_unittest.cc',
         'browser/sync/util/character_set_converters_unittest.cc',
         'browser/sync/util/crypto_helpers_unittest.cc',
         'browser/sync/util/event_sys_unittest.cc',
+        'browser/sync/util/extensions_activity_monitor_unittest.cc',
         'browser/sync/util/highres_timer_unittest.cc',
         'browser/sync/util/path_helpers_unittest.cc',
         'browser/sync/util/query_helpers_unittest.cc',
         'browser/sync/util/user_settings_unittest.cc',
         'test/sync/engine/mock_gaia_authenticator.cc',
         'test/sync/engine/mock_gaia_authenticator.h',
         'test/sync/engine/mock_gaia_authenticator_unittest.cc',
         'test/sync/engine/mock_server_connection.cc',
         'test/sync/engine/mock_server_connection.h',
         'test/sync/engine/test_directory_setter_upper.cc',
         'test/sync/engine/test_directory_setter_upper.h',
         'test/sync/engine/test_id_factory.h',
       ],
       'include_dirs': [
         '..',
         '<(protoc_out_dir)',
       ],
       'defines' : [
         'SYNC_ENGINE_VERSION_STRING="Unknown"',
         '_CRT_SECURE_NO_WARNINGS',
         '_USE_32BIT_TIME_T',
       ],
       'dependencies': [
-        '../testing/gtest.gyp:gtest',
-        '../third_party/libjingle/libjingle.gyp:libjingle',
-        'notifier',
-        'sync',
-        'sync_proto',
-        'test_support_unit',
+       'common',
+       'debugger',
+       '../skia/skia.gyp:skia',
+       '../testing/gtest.gyp:gtest',
+       '../third_party/libjingle/libjingle.gyp:libjingle',
+       'syncapi',
+       'sync_proto',
+       'test_support_unit',
       ],
       'conditions': [
         ['OS=="win"', {
           'sources' : [
             'browser/sync/util/data_encryption_unittest.cc',
           ],
           'dependencies': [
             '../third_party/tcmalloc/tcmalloc.gyp:tcmalloc',
           ],
           'link_settings': {
@@ skipping 116 matching lines @@
         'browser/sync/util/character_set_converters_win.cc',
         'browser/sync/util/closure.h',
         'browser/sync/util/compat_file.h',
         'browser/sync/util/compat_file_posix.cc',
         'browser/sync/util/compat_file_win.cc',
         'browser/sync/util/crypto_helpers.cc',
         'browser/sync/util/crypto_helpers.h',
         'browser/sync/util/dbgq.h',
         'browser/sync/util/event_sys-inl.h',
         'browser/sync/util/event_sys.h',
+        'browser/sync/util/extensions_activity_monitor.cc',
+        'browser/sync/util/extensions_activity_monitor.h',
         'browser/sync/util/fast_dump.h',
         'browser/sync/util/highres_timer.h',
         'browser/sync/util/highres_timer_linux.cc',
         'browser/sync/util/highres_timer_linux.h',
         'browser/sync/util/highres_timer_mac.cc',
         'browser/sync/util/highres_timer_mac.h',
         'browser/sync/util/highres_timer_win.cc',
         'browser/sync/util/highres_timer_win.h',
         'browser/sync/util/path_helpers.h',
         'browser/sync/util/path_helpers_linux.cc',
@@ skipping 12 matching lines @@
       'include_dirs': [
         '..',
         '<(protoc_out_dir)',
       ],
       'defines' : [
         'SYNC_ENGINE_VERSION_STRING="Unknown"',
         '_CRT_SECURE_NO_WARNINGS',
         '_USE_32BIT_TIME_T',
       ],
       'dependencies': [
+        '../skia/skia.gyp:skia',
         '../third_party/libjingle/libjingle.gyp:libjingle',
         'sync_proto',
       ],
       'conditions': [
         ['OS=="win"', {
           'sources' : [
             'browser/sync/util/data_encryption.cc',
             'browser/sync/util/data_encryption.h',
             'browser/sync/util/path_helpers.cc',
           ],
@@ skipping 1511 matching lines @@
       ]
     }],
   ],  # 'conditions'
 }
 
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