[Background Sync] Use Mojo IPC to fire background sync events

content/content_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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../device/battery/battery.gyp:device_battery',
     '../device/battery/battery.gyp:device_battery_mojo_bindings',
@@ skipping 1326 matching lines @@
       'browser/service_worker/service_worker_database.cc',
       'browser/service_worker/service_worker_database.h',
       'browser/service_worker/service_worker_database_task_manager.cc',
       'browser/service_worker/service_worker_database_task_manager.h',
       'browser/service_worker/service_worker_disk_cache.cc',
       'browser/service_worker/service_worker_disk_cache.h',
       'browser/service_worker/service_worker_disk_cache_migrator.cc',
       'browser/service_worker/service_worker_disk_cache_migrator.h',
       'browser/service_worker/service_worker_dispatcher_host.cc',
       'browser/service_worker/service_worker_dispatcher_host.h',
+      'browser/service_worker/service_worker_event_dispatcher.cc',
+      'browser/service_worker/service_worker_event_dispatcher.h',
       'browser/service_worker/service_worker_fetch_dispatcher.cc',
       'browser/service_worker/service_worker_fetch_dispatcher.h',
       'browser/service_worker/service_worker_handle.cc',
       'browser/service_worker/service_worker_handle.h',
       'browser/service_worker/service_worker_info.cc',
       'browser/service_worker/service_worker_info.h',
       'browser/service_worker/service_worker_internals_ui.cc',
       'browser/service_worker/service_worker_internals_ui.h',
       'browser/service_worker/service_worker_job_coordinator.cc',
       'browser/service_worker/service_worker_job_coordinator.h',
@@ skipping 730 matching lines @@
         'browser/media/media_web_contents_observer.h',
       ],
     }],
     ['OS == "linux" and use_openssl==1', {
       'dependencies': [
         '../third_party/boringssl/boringssl.gyp:boringssl',
       ],
     }],
   ],
 }