Move GCMClient related files to gcm_driver component

sync/notifier/gcm_network_channel_delegate.h

 // 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.
 
 #ifndef SYNC_NOTIFIER_GCM_NETWORK_CHANNEL_DELEGATE_H_
 #define SYNC_NOTIFIER_GCM_NETWORK_CHANNEL_DELEGATE_H_
 
 #include <string>
 
 #include "base/callback.h"
-#include "google_apis/gcm/gcm_client.h"
+#include "components/gcm_driver/gcm_client.h"
 
 class GoogleServiceAuthError;
 
 namespace syncer {
 
 // Delegate for GCMNetworkChannel.
 // GCMNetworkChannel needs Register to register with GCM client and obtain gcm
 // registration id. This id is used for building URL to cache invalidation
 // endpoint.
 // It needs RequestToken and InvalidateToken to get access token to include it
@@ skipping 20 matching lines @@
 
   // Request registration_id from GCMService. Callback should be called with
   // either registration id or error code.
   virtual void Register(RegisterCallback callback) = 0;
   // Provide callback for incoming messages from GCM.
   virtual void SetMessageReceiver(MessageCallback callback) = 0;
 };
 }  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_GCM_NETWORK_CHANNEL_DELEGATE_H_