Preparation for new Promise-based RTCPeerConnection.getStats.

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 95 matching lines @@
     MediaStreamVector getLocalStreams() const;
 
     MediaStreamVector getRemoteStreams() const;
 
     MediaStream* getStreamById(const String& streamId);
 
     void addStream(ExecutionContext*, MediaStream*, const Dictionary& mediaConstraints, ExceptionState&);
 
     void removeStream(MediaStream*, ExceptionState&);
 
-    void getStats(ExecutionContext*, RTCStatsCallback* successCallback, MediaStreamTrack* selector);
+    ScriptPromise getStats(ScriptState*, ScriptValue);
+    ScriptPromise getStats(ScriptState*, RTCStatsCallback* successCallback, MediaStreamTrack* selector = nullptr);
+    ScriptPromise getStats(ScriptState*, MediaStreamTrack* selector = nullptr);
 
     RTCDataChannel* createDataChannel(String label, const Dictionary& dataChannelDict, ExceptionState&);
 
     RTCDTMFSender* createDTMFSender(MediaStreamTrack*, ExceptionState&);
 
     void close(ExceptionState&);
 
     // We allow getStats after close, but not other calls or callbacks.
     bool shouldFireDefaultCallbacks() { return !m_closed && !m_stopped; }
     bool shouldFireGetStatsCallback() { return !m_stopped; }
@@ skipping 87 matching lines @@
 
     bool m_stopped;
     bool m_closed;
 
     bool m_hasDataChannels; // For RAPPOR metrics
 };
 
 } // namespace blink
 
 #endif // RTCPeerConnection_h