[DevTools] Switch from separate sendMessageToBackend method to using embedder.

Source/web/InspectorFrontendClientImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 36 matching lines @@
 class InspectorFrontendClientImpl FINAL : public blink::InspectorFrontendClient {
     WTF_MAKE_NONCOPYABLE(InspectorFrontendClientImpl);
 public:
     InspectorFrontendClientImpl(blink::Page*, WebDevToolsFrontendClient*, WebDevToolsFrontendImpl*);
     virtual ~InspectorFrontendClientImpl();
     virtual void trace(Visitor*) OVERRIDE;
 
     // InspectorFrontendClient methods:
     virtual void windowObjectCleared() OVERRIDE;
 
-    virtual void sendMessageToBackend(const WTF::String&) OVERRIDE;
-
     virtual void sendMessageToEmbedder(const WTF::String&) OVERRIDE;
 
     virtual bool isUnderTest() OVERRIDE;
 
     virtual void dispose() OVERRIDE;
 
 private:
     RawPtrWillBeMember<blink::Page> m_frontendPage;
     WebDevToolsFrontendClient* m_client;
     RefPtrWillBeMember<blink::InspectorFrontendHost> m_frontendHost;
 };
 
 } // namespace blink
 
 #endif