RTCPeerConnection.ontrack event added.

third_party/WebKit/public/platform/WebRTCPeerConnectionHandlerClient.h

Index: third_party/WebKit/public/platform/WebRTCPeerConnectionHandlerClient.h
diff --git a/third_party/WebKit/public/platform/WebRTCPeerConnectionHandlerClient.h b/third_party/WebKit/public/platform/WebRTCPeerConnectionHandlerClient.h
index 0a2fccd8639daf88d833cb15b9803ed7d7f80f07..3725995f25940d781408db2bafb663530f8e8b50 100644
--- a/third_party/WebKit/public/platform/WebRTCPeerConnectionHandlerClient.h
+++ b/third_party/WebKit/public/platform/WebRTCPeerConnectionHandlerClient.h
@@ -32,12 +32,14 @@
 #define WebRTCPeerConnectionHandlerClient_h
 
 #include "WebCommon.h"
+#include "WebVector.h"
 
 namespace blink {
 
 class WebMediaStream;
 class WebRTCDataChannelHandler;
 class WebRTCICECandidate;
+class WebRTCRtpReceiver;
 
 class BLINK_PLATFORM_EXPORT WebRTCPeerConnectionHandlerClient {
  public:
@@ -76,7 +78,9 @@ class BLINK_PLATFORM_EXPORT WebRTCPeerConnectionHandlerClient {
   virtual void DidChangeSignalingState(SignalingState) = 0;
   virtual void DidChangeICEGatheringState(ICEGatheringState) = 0;
   virtual void DidChangeICEConnectionState(ICEConnectionState) = 0;
-  virtual void DidAddRemoteStream(const WebMediaStream&) = 0;
+  virtual void DidAddRemoteStream(
+      const WebMediaStream&,
+      WebVector<std::unique_ptr<WebRTCRtpReceiver>>*) = 0;
   virtual void DidRemoveRemoteStream(const WebMediaStream&) = 0;
   virtual void DidAddRemoteDataChannel(WebRTCDataChannelHandler*) = 0;
   virtual void ReleasePeerConnectionHandler() = 0;