Use event init dictionary in core/html/track

Source/core/html/track/TextTrackList.cpp

 /*
  * Copyright (C) 2011, 2012 Apple 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 262 matching lines @@
 
 #if !ENABLE(OILPAN)
 void TextTrackList::clearOwner()
 {
     m_owner = nullptr;
 }
 #endif
 
 void TextTrackList::scheduleTrackEvent(const AtomicString& eventName, PassRefPtrWillBeRawPtr<TextTrack> track)
 {
-    TrackEventInit initializer;
-    initializer.track = track;
-    initializer.bubbles = false;
-    initializer.cancelable = false;
-
-    m_asyncEventQueue->enqueueEvent(TrackEvent::create(eventName, initializer));
+    m_asyncEventQueue->enqueueEvent(TrackEvent::create(eventName, track));
 }
 
 void TextTrackList::scheduleAddTrackEvent(PassRefPtrWillBeRawPtr<TextTrack> track)
 {
     // 4.8.10.12.3 Sourcing out-of-band text tracks
     // 4.8.10.12.4 Text track API
     // ... then queue a task to fire an event with the name addtrack, that does not
     // bubble and is not cancelable, and that uses the TrackEvent interface, with
     // the track attribute initialized to the text track's TextTrack object, at
     // the media element's textTracks attribute's TextTrackList object.
@@ skipping 34 matching lines @@
 
 void TextTrackList::trace(Visitor* visitor)
 {
     visitor->trace(m_owner);
     visitor->trace(m_asyncEventQueue);
     visitor->trace(m_addTrackTracks);
     visitor->trace(m_elementTracks);
     visitor->trace(m_inbandTracks);
     EventTargetWithInlineData::trace(visitor);
 }