RTCPeerConnection.ontrack event added.

third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.h

Index: third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.h
diff --git a/third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.h b/third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.h
new file mode 100644
index 0000000000000000000000000000000000000000..26a4d755fae4cbe7496ab9c9d4953594702fbe91
--- /dev/null
+++ b/third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.h
@@ -0,0 +1,48 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef RTCTrackEvent_h
+#define RTCTrackEvent_h
+
+#include "modules/EventModules.h"
+#include "platform/heap/Member.h"
+#include "platform/heap/Visitor.h"
+#include "platform/wtf/text/AtomicString.h"
+
+namespace blink {
+
+class MediaStream;
+class MediaStreamTrack;
+class RTCRtpReceiver;
+class RTCTrackEventInit;
+
+// https://w3c.github.io/webrtc-pc/#rtctrackevent
+class RTCTrackEvent final : public Event {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  static RTCTrackEvent* Create(const AtomicString& type,
+                               const RTCTrackEventInit& eventInitDict);
+  RTCTrackEvent(RTCRtpReceiver*,
+                MediaStreamTrack*,
+                const HeapVector<Member<MediaStream>>&);
+
+  RTCRtpReceiver* receiver() const;
+  MediaStreamTrack* track() const;
+  HeapVector<Member<MediaStream>> streams() const;
+
+  DECLARE_VIRTUAL_TRACE();
+
+ private:
+  RTCTrackEvent(const AtomicString& type,
+                const RTCTrackEventInit& eventInitDict);
+
+  Member<RTCRtpReceiver> receiver_;
+  Member<MediaStreamTrack> track_;
+  HeapVector<Member<MediaStream>> streams_;
+};
+
+}  // namespace blink
+
+#endif  // RTCTrackEvent_h