Interface RTCRtpReceiver and RTCPeerConnection.getReceivers() added.

third_party/WebKit/public/platform/WebMediaStream.h

 /*
  * Copyright (C) 2013 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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 51 matching lines @@
       const WebVector<WebMediaStreamTrack>& audioTracks,
       const WebVector<WebMediaStreamTrack>& videoTracks);
 
   BLINK_PLATFORM_EXPORT void reset();
   bool isNull() const { return m_private.isNull(); }
 
   BLINK_PLATFORM_EXPORT WebString id() const;
 
   BLINK_PLATFORM_EXPORT void audioTracks(WebVector<WebMediaStreamTrack>&) const;
   BLINK_PLATFORM_EXPORT void videoTracks(WebVector<WebMediaStreamTrack>&) const;
+  // If a track is not found with the specified id, the returned track's
+  // |isNull| will return true.
+  BLINK_PLATFORM_EXPORT WebMediaStreamTrack
+  getAudioTrack(const WebString& trackId) const;
+  BLINK_PLATFORM_EXPORT WebMediaStreamTrack
+  getVideoTrack(const WebString& trackId) const;
 
   BLINK_PLATFORM_EXPORT void addTrack(const WebMediaStreamTrack&);
   BLINK_PLATFORM_EXPORT void removeTrack(const WebMediaStreamTrack&);
 
   // Extra data associated with this WebMediaStream.
   // If non-null, the extra data pointer will be deleted when the object is
   // destroyed.  Setting the extra data pointer will cause any existing non-null
   // extra data pointer to be deleted.
   BLINK_PLATFORM_EXPORT ExtraData* getExtraData() const;
   BLINK_PLATFORM_EXPORT void setExtraData(ExtraData*);
 
 #if INSIDE_BLINK
   BLINK_PLATFORM_EXPORT WebMediaStream(MediaStreamDescriptor*);
   BLINK_PLATFORM_EXPORT operator MediaStreamDescriptor*() const;
   BLINK_PLATFORM_EXPORT WebMediaStream& operator=(MediaStreamDescriptor*);
 #endif
 
  private:
   WebPrivatePtr<MediaStreamDescriptor> m_private;
 };
 
 }  // namespace blink
 
 #endif  // WebMediaStream_h