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

chrome/android/chrome_apk.gyp

 # Copyright 2015 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.
 {
   'includes': [
     '../../chrome/chrome_android_paks.gypi', # Included for the list of pak resources.
     '../../build/util/version.gypi'
    ],
   'variables': {
     'chromium_code': 1,
@@ skipping 277 matching lines @@
         '../../chrome/chrome.gyp:chrome_java_test_support',
         '../../components/components.gyp:invalidation_javatests',
         '../../components/components.gyp:offline_pages_enums_java',
         '../../components/components.gyp:precache_javatests',
         '../../components/components.gyp:web_contents_delegate_android_java',
         '../../content/content_shell_and_tests.gyp:content_java_test_support',
         '../../net/net.gyp:net_java',
         '../../net/net.gyp:net_java_test_support',
         '../../sync/sync.gyp:sync_java_test_support',
         '../../third_party/android_tools/android_tools.gyp:android_support_v7_appcompat_javalib',
+        '../../third_party/android_tools/android_tools.gyp:google_play_services_javalib',
         '../../ui/android/ui_android.gyp:ui_javatests',
       ],
       'includes': [ '../../build/java.gypi' ],
     },
     {
       # GN: //chrome/android:chrome_public_test_apk_manifest
       'target_name': 'chrome_public_test_apk_manifest',
       'type': 'none',
       'variables': {
         'jinja_inputs': ['javatests/AndroidManifest.xml'],
@@ skipping 109 matching lines @@
       }
     ],
   ],
 }
 
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