Expose RTCPeerConnection.icegatheringstatechange.

third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.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 148 matching lines @@
   // We allow getStats after close, but not other calls or callbacks.
   bool shouldFireDefaultCallbacks() { return !m_closed && !m_stopped; }
   bool shouldFireGetStatsCallback() { return !m_stopped; }
 
   DEFINE_ATTRIBUTE_EVENT_LISTENER(negotiationneeded);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(icecandidate);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(signalingstatechange);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(addstream);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(removestream);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(iceconnectionstatechange);
+  DEFINE_ATTRIBUTE_EVENT_LISTENER(icegatheringstatechange);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(datachannel);
 
   // WebRTCPeerConnectionHandlerClient
   void negotiationNeeded() override;
   void didGenerateICECandidate(const WebRTCICECandidate&) override;
   void didChangeSignalingState(SignalingState) override;
   void didChangeICEGatheringState(ICEGatheringState) override;
   void didChangeICEConnectionState(ICEConnectionState) override;
   void didAddRemoteStream(const WebMediaStream&) override;
   void didRemoveRemoteStream(const WebMediaStream&) override;
@@ skipping 79 matching lines @@
 
   bool m_stopped;
   bool m_closed;
 
   bool m_hasDataChannels;  // For RAPPOR metrics
 };
 
 }  // namespace blink
 
 #endif  // RTCPeerConnection_h