[GCM] Extracting GCMConnectionObserver from GCMAppHandler

components/gcm_driver.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //components/gcm_driver
       'target_name': 'gcm_driver',
       'type': 'static_library',
@@ skipping 15 matching lines @@
         'gcm_driver/gcm_activity.cc',
         'gcm_driver/gcm_activity.h',
         'gcm_driver/gcm_app_handler.cc',
         'gcm_driver/gcm_app_handler.h',
         'gcm_driver/gcm_client.cc',
         'gcm_driver/gcm_client.h',
         'gcm_driver/gcm_client_factory.cc',
         'gcm_driver/gcm_client_factory.h',
         'gcm_driver/gcm_client_impl.cc',
         'gcm_driver/gcm_client_impl.h',
+        'gcm_driver/gcm_connection_observer.cc',
+        'gcm_driver/gcm_connection_observer.h',
         'gcm_driver/gcm_driver.cc',
         'gcm_driver/gcm_driver.h',
         'gcm_driver/gcm_driver_android.cc',
         'gcm_driver/gcm_driver_android.h',
         'gcm_driver/gcm_driver_desktop.cc',
         'gcm_driver/gcm_driver_desktop.h',
         'gcm_driver/gcm_stats_recorder_impl.cc',
         'gcm_driver/gcm_stats_recorder_impl.h',
         'gcm_driver/system_encryptor.cc',
         'gcm_driver/system_encryptor.h',
@@ skipping 84 matching lines @@
           'variables': {
             'jni_gen_package': 'components/gcm_driver',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
      },
     ],
   ],
 }