[Background Sync] Use GcmNetworkManager to start the browser for sync events.

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 836 matching lines @@
       'browser/translate/translate_accept_languages_factory.cc',
       'browser/translate/translate_accept_languages_factory.h',
       'browser/translate/translate_service.cc',
       'browser/translate/translate_service.h',
       'browser/update_client/chrome_update_query_params_delegate.cc',
       'browser/update_client/chrome_update_query_params_delegate.h',
       'browser/web_data_service_factory.cc',
       'browser/web_data_service_factory.h',
     ],
     'chrome_browser_android_sources': [
+      'browser/android/background_sync_launcher_android.cc',
+      'browser/android/background_sync_launcher_android.h',
       'browser/download/download_request_infobar_delegate.cc',
       'browser/download/download_request_infobar_delegate.h',
       'browser/geolocation/geolocation_infobar_delegate.cc',
       'browser/geolocation/geolocation_infobar_delegate.h',
       'browser/media/media_stream_infobar_delegate.cc',
       'browser/media/media_stream_infobar_delegate.h',
       'browser/media/midi_permission_infobar_delegate.cc',
       'browser/media/midi_permission_infobar_delegate.h',
       'browser/media/protected_media_identifier_infobar_delegate.cc',
       'browser/media/protected_media_identifier_infobar_delegate.h',
@@ skipping 863 matching lines @@
       'android/java/src/org/chromium/chrome/browser/appmenu/AppMenuDragHelper.java',
       'android/java/src/org/chromium/chrome/browser/autofill/AutofillDialogControllerAndroid.java',
       'android/java/src/org/chromium/chrome/browser/autofill/AutofillDialogResult.java',
       'android/java/src/org/chromium/chrome/browser/autofill/AutofillKeyboardAccessoryBridge.java',
       'android/java/src/org/chromium/chrome/browser/autofill/AutofillLogger.java',
       'android/java/src/org/chromium/chrome/browser/autofill/AutofillPopupBridge.java',
       'android/java/src/org/chromium/chrome/browser/autofill/CardUnmaskBridge.java',
       'android/java/src/org/chromium/chrome/browser/autofill/CreditCardScanner.java',
       'android/java/src/org/chromium/chrome/browser/autofill/PasswordGenerationPopupBridge.java',
       'android/java/src/org/chromium/chrome/browser/autofill/PersonalDataManager.java',
+      'android/java/src/org/chromium/chrome/browser/BackgroundSyncLauncher.java',
       'android/java/src/org/chromium/chrome/browser/BluetoothChooserDialog.java',
       'android/java/src/org/chromium/chrome/browser/BookmarksBridge.java',
       'android/java/src/org/chromium/chrome/browser/bookmark/EditBookmarkHelper.java',
       'android/java/src/org/chromium/chrome/browser/banners/AppBannerManager.java',
       'android/java/src/org/chromium/chrome/browser/CertificateViewer.java',
       'android/java/src/org/chromium/chrome/browser/childaccounts/ChildAccountService.java',
       'android/java/src/org/chromium/chrome/browser/childaccounts/ChildAccountFeedbackReporter.java',
       'android/java/src/org/chromium/chrome/browser/ChromeApplication.java',
       'android/java/src/org/chromium/chrome/browser/ChromeBrowserProvider.java',
       'android/java/src/org/chromium/chrome/browser/ChromeHttpAuthHandler.java',
@@ skipping 2368 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }