Implement the MediaStreamTrackEvent constructor

third_party/WebKit/Source/modules/mediastream/MediaStreamTrackEvent.cpp

 /*
  * 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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "modules/mediastream/MediaStreamTrackEvent.h"
 
 #include "modules/mediastream/MediaStreamTrack.h"
 
 namespace blink {
 
-MediaStreamTrackEvent* MediaStreamTrackEvent::create(const AtomicString& type, bool canBubble, bool cancelable, MediaStreamTrack* track)
+MediaStreamTrackEvent* MediaStreamTrackEvent::create(const AtomicString& type, MediaStreamTrack* track)
 {
-    return new MediaStreamTrackEvent(type, canBubble, cancelable, track);
+    return new MediaStreamTrackEvent(type, track);
 }
 
-MediaStreamTrackEvent::MediaStreamTrackEvent(const AtomicString& type, bool canBubble, bool cancelable, MediaStreamTrack* track)
-    : Event(type, canBubble, cancelable)
+MediaStreamTrackEvent::MediaStreamTrackEvent(const AtomicString& type, MediaStreamTrack* track)
+    : Event(type, false, false)
     , m_track(track)
 {
+    DCHECK(m_track);
+}
+
+MediaStreamTrackEvent* MediaStreamTrackEvent::create(const AtomicString& type, const MediaStreamTrackEventInit& initializer)
+{
+    return new MediaStreamTrackEvent(type, initializer);
+}
+
+MediaStreamTrackEvent::MediaStreamTrackEvent(const AtomicString& type, const MediaStreamTrackEventInit& initializer)
+    : Event(type, initializer)
+    , m_track(initializer.track())
+{
+    DCHECK(m_track);
 }
 
 MediaStreamTrackEvent::~MediaStreamTrackEvent()
 {
 }
 
 MediaStreamTrack* MediaStreamTrackEvent::track() const
 {
     return m_track.get();
 }
 
 const AtomicString& MediaStreamTrackEvent::interfaceName() const
 {
     return EventNames::MediaStreamTrackEvent;
 }
 
 DEFINE_TRACE(MediaStreamTrackEvent)
 {
     visitor->trace(m_track);
     Event::trace(visitor);
 }
 
 } // namespace blink