Add serializers to RTCIceCandidate and RTCSessionDescription

Source/modules/mediastream/RTCIceCandidate.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:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 21 matching lines @@
 #define RTCIceCandidate_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "public/platform/WebRTCICECandidate.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class RTCIceCandidateInit;
 class ExceptionState;
+class ScriptState;
+class ScriptValue;
 
 class RTCIceCandidate final : public GarbageCollectedFinalized<RTCIceCandidate>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static RTCIceCandidate* create(const RTCIceCandidateInit&, ExceptionState&);
     static RTCIceCandidate* create(WebRTCICECandidate);
 
     String candidate() const;
     void setCandidate(String);
     String sdpMid() const;
     void setSdpMid(String);
     unsigned short sdpMLineIndex() const;
     void setSdpMLineIndex(unsigned short);
 
+    ScriptValue toJSONForBinding(ScriptState*);
+
     WebRTCICECandidate webCandidate() const;
 
     DEFINE_INLINE_TRACE() { }
 
 private:
     explicit RTCIceCandidate(WebRTCICECandidate);
 
     WebRTCICECandidate m_webCandidate;
 };
 
 } // namespace blink
 
 #endif // RTCIceCandidate_h