Clean forward declaration in public

public/platform/WebRTCPeerConnectionHandler.h

 /*
  * Copyright (C) 2012 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 23 matching lines @@
 namespace blink {
 
 class WebMediaConstraints;
 class WebMediaStream;
 class WebMediaStreamTrack;
 class WebRTCConfiguration;
 class WebRTCDTMFSenderHandler;
 class WebRTCDataChannelHandler;
 class WebRTCICECandidate;
 class WebRTCOfferOptions;
-class WebRTCPeerConnectionHandlerClient;
 class WebRTCSessionDescription;
 class WebRTCSessionDescriptionRequest;
 class WebRTCStatsRequest;
 class WebRTCVoidRequest;
 class WebString;
 struct WebRTCDataChannelInit;
 
 class WebRTCPeerConnectionHandler {
 public:
     virtual ~WebRTCPeerConnectionHandler() { }
@@ skipping 17 matching lines @@
     virtual void removeStream(const WebMediaStream&) = 0;
     virtual void getStats(const WebRTCStatsRequest&) = 0;
     virtual WebRTCDataChannelHandler* createDataChannel(const WebString& label, const WebRTCDataChannelInit&) = 0;
     virtual WebRTCDTMFSenderHandler* createDTMFSender(const WebMediaStreamTrack&) = 0;
     virtual void stop() = 0;
 };
 
 } // namespace blink
 
 #endif // WebRTCPeerConnectionHandler_h