Use event init dictionary in core/html/track

Source/core/html/track/TrackListBase.h

 // Copyright 2014 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 TrackListBase_h
 #define TrackListBase_h
 
 #include "core/events/EventTarget.h"
 
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/track/TrackEvent.h"
+#include "core/html/track/TrackEventInit.h"
 
 namespace blink {
 
 template<class T>
 class TrackListBase : public RefCountedWillBeGarbageCollectedFinalized<TrackListBase<T>>, public EventTargetWithInlineData {
     REFCOUNTED_EVENT_TARGET(TrackListBase);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(TrackListBase);
 public:
     explicit TrackListBase(HTMLMediaElement* mediaElement)
         : m_mediaElement(mediaElement)
@@ skipping 89 matching lines @@
     void trace(Visitor* visitor)
     {
         visitor->trace(m_tracks);
         visitor->trace(m_mediaElement);
         EventTargetWithInlineData::trace(visitor);
     }
 
 private:
     void scheduleTrackEvent(const AtomicString& eventName, PassRefPtrWillBeRawPtr<T> track)
     {
-        TrackEventInit initializer;
-        initializer.track = track;
-        initializer.bubbles = false;
-        initializer.cancelable = false;
-        RefPtrWillBeRawPtr<Event> event = TrackEvent::create(eventName, initializer);
+        RefPtrWillBeRawPtr<Event> event = TrackEvent::create(eventName, track);
         event->setTarget(this);
         m_mediaElement->scheduleEvent(event);
     }
 
     WillBeHeapVector<RefPtrWillBeMember<T>> m_tracks;
     RawPtrWillBeMember<HTMLMediaElement> m_mediaElement;
 };
 
 }
 
 #endif