Componentize protocol_event_observer

chrome/chrome_browser.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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 2928 matching lines @@
       'browser/sync/glue/ui_model_worker.h',
       'browser/sync/profile_sync_components_factory.h',
       'browser/sync/profile_sync_components_factory_impl.cc',
       'browser/sync/profile_sync_components_factory_impl.h',
       'browser/sync/profile_sync_service.cc',
       'browser/sync/profile_sync_service.h',
       'browser/sync/profile_sync_service_android.cc',
       'browser/sync/profile_sync_service_android.h',
       'browser/sync/profile_sync_service_factory.cc',
       'browser/sync/profile_sync_service_factory.h',
-      'browser/sync/protocol_event_observer.cc',
-      'browser/sync/protocol_event_observer.h',
       'browser/sync/sessions/notification_service_sessions_router.cc',
       'browser/sync/sessions/notification_service_sessions_router.h',
       'browser/sync/sessions/session_data_type_controller.cc',
       'browser/sync/sessions/session_data_type_controller.h',
       'browser/sync/sessions/sessions_sync_manager.cc',
       'browser/sync/sessions/sessions_sync_manager.h',
       'browser/sync/sessions/sessions_util.cc',
       'browser/sync/sessions/sessions_util.h',
       'browser/sync/sessions/synced_window_delegates_getter.cc',
       'browser/sync/sessions/synced_window_delegates_getter.h',
@@ skipping 1155 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }