Introduce a layering in the invalidation component as public and impl

components/invalidation/impl/gcm_invalidation_bridge.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 COMPONENTS_INVALIDATION_GCM_INVALIDATION_BRIDGE_H_
-#define COMPONENTS_INVALIDATION_GCM_INVALIDATION_BRIDGE_H_
+#ifndef COMPONENTS_INVALIDATION_IMPL_GCM_INVALIDATION_BRIDGE_H_
+#define COMPONENTS_INVALIDATION_IMPL_GCM_INVALIDATION_BRIDGE_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "components/gcm_driver/gcm_app_handler.h"
 #include "components/gcm_driver/gcm_client.h"
 #include "components/gcm_driver/gcm_connection_observer.h"
-#include "components/invalidation/gcm_network_channel_delegate.h"
+#include "components/invalidation/impl/gcm_network_channel_delegate.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 
 class IdentityProvider;
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace gcm {
 class GCMDriver;
@@ skipping 77 matching lines @@
       request_token_callback_;
   bool subscribed_for_incoming_messages_;
 
   base::WeakPtrFactory<GCMInvalidationBridge> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMInvalidationBridge);
 };
 
 }  // namespace invalidation
 
-#endif  // COMPONENTS_INVALIDATION_GCM_INVALIDATION_BRIDGE_H_
+#endif  // COMPONENTS_INVALIDATION_IMPL_GCM_INVALIDATION_BRIDGE_H_