RTCPeerConnection.ontrack event added.

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

Index: third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.cpp
diff --git a/third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.cpp b/third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7051581f6eec94dea5b1282d66a0b407b3fe3e56
--- /dev/null
+++ b/third_party/WebKit/Source/modules/peerconnection/RTCTrackEvent.cpp
@@ -0,0 +1,59 @@
+// 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.
+
+#include "modules/peerconnection/RTCTrackEvent.h"
+
+#include "modules/mediastream/MediaStream.h"
+#include "modules/mediastream/MediaStreamTrack.h"
+#include "modules/peerconnection/RTCRtpReceiver.h"
+#include "modules/peerconnection/RTCTrackEventInit.h"
+
+namespace blink {
+
+RTCTrackEvent* RTCTrackEvent::Create(const AtomicString& type,
+                                     const RTCTrackEventInit& eventInitDict) {
+  return new RTCTrackEvent(type, eventInitDict);
+}
+
+RTCTrackEvent::RTCTrackEvent(const AtomicString& type,
+                             const RTCTrackEventInit& eventInitDict)
+    : Event(type, eventInitDict),
+      receiver_(eventInitDict.receiver()),
+      track_(eventInitDict.track()),
+      streams_(eventInitDict.streams()) {
+  DCHECK(receiver_);
+  DCHECK(track_);
+}
+
+RTCTrackEvent::RTCTrackEvent(RTCRtpReceiver* receiver,
+                             MediaStreamTrack* track,
+                             const HeapVector<Member<MediaStream>>& streams)
+    : Event(EventTypeNames::track, false, false),
+      receiver_(receiver),
+      track_(track),
+      streams_(streams) {
+  DCHECK(receiver_);
+  DCHECK(track_);
+}
+
+RTCRtpReceiver* RTCTrackEvent::receiver() const {
+  return receiver_;
+}
+
+MediaStreamTrack* RTCTrackEvent::track() const {
+  return track_;
+}
+
+HeapVector<Member<MediaStream>> RTCTrackEvent::streams() const {
+  return streams_;
+}
+
+DEFINE_TRACE(RTCTrackEvent) {
+  visitor->Trace(receiver_);
+  visitor->Trace(track_);
+  visitor->Trace(streams_);
+  Event::Trace(visitor);
+}
+
+}  // namespace blink