Plumb invalidations from Tango to the extensions code for the Push Messaging API.

chrome/chrome_browser.gypi

 # Copyright (c) 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 2321 matching lines @@
         'browser/sync/glue/typed_url_data_type_controller.cc',
         'browser/sync/glue/typed_url_data_type_controller.h',
         'browser/sync/glue/typed_url_model_associator.cc',
         'browser/sync/glue/typed_url_model_associator.h',
         'browser/sync/glue/ui_data_type_controller.cc',
         'browser/sync/glue/ui_data_type_controller.h',
         'browser/sync/glue/ui_model_worker.cc',
         'browser/sync/glue/ui_model_worker.h',
         'browser/sync/invalidations/invalidator_storage.cc',
         'browser/sync/invalidations/invalidator_storage.h',
+        'browser/sync/invalidation_frontend.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_factory.cc',
         'browser/sync/profile_sync_service_factory.h',
         'browser/sync/profile_sync_service_harness.cc',
         'browser/sync/profile_sync_service_harness.h',
         'browser/sync/profile_sync_service_observer.h',
@@ skipping 3229 matching lines @@
           'includes': [ '../build/jni_generator.gypi' ],
           'dependencies': [
             'android_jar_jni_headers',
           ],
         },
       ],
      },
     ],
   ],
 }