Extract Profile-independent GCMService from GCMProfileService

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"
@@ skipping 22 matching lines @@
 
   virtual ~GCMNetworkChannelDelegate() {}
 
   virtual void Initialize() = 0;
   // Request access token. Callback should be called either with access token or
   // error code.
   virtual void RequestToken(RequestTokenCallback callback) = 0;
   // Invalidate access token that was rejected by server.
   virtual void InvalidateToken(const std::string& token) = 0;
 
-  // Request registration_id from GCMProfileService. Callback should be called
-  // with either registration id or error code.
+  // 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_