Introduce CryptAuthGCMManager, which handles GCM interactions for CryptAuth.

components/components_tests.gyp

 # Copyright 2014 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': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 442 matching lines @@
       'proximity_auth/bluetooth_throttler_impl_unittest.cc',
       'proximity_auth/client_impl_unittest.cc',
       'proximity_auth/connection_unittest.cc',
       'proximity_auth/cryptauth/base64url_unittest.cc',
       'proximity_auth/cryptauth/cryptauth_access_token_fetcher_impl_unittest.cc',
       'proximity_auth/cryptauth/cryptauth_api_call_flow_unittest.cc',
       'proximity_auth/cryptauth/cryptauth_client_impl_unittest.cc',
       'proximity_auth/cryptauth/cryptauth_device_manager_unittest.cc',
       'proximity_auth/cryptauth/cryptauth_enroller_impl_unittest.cc',
       'proximity_auth/cryptauth/cryptauth_enrollment_manager_unittest.cc',
+      'proximity_auth/cryptauth/cryptauth_gcm_manager_impl_unittest.cc',
       'proximity_auth/cryptauth/fake_secure_message_delegate_unittest.cc',
       'proximity_auth/cryptauth/sync_scheduler_impl_unittest.cc',
       'proximity_auth/logging/logging_unittest.cc',
       'proximity_auth/proximity_auth_system_unittest.cc',
       'proximity_auth/proximity_monitor_impl_unittest.cc',
       'proximity_auth/remote_status_update_unittest.cc',
       'proximity_auth/throttled_bluetooth_connection_finder_unittest.cc',
       'proximity_auth/wire_message_unittest.cc',
     ],
     'proxy_config_unittest_sources': [
@@ skipping 1025 matching lines @@
           ],
           'variables': {
             'test_suite_name': 'components_unittests',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }