Add "change" and "removetrack" events to TextTrackList.

Source/core/html/track/TextTrackList.h

 /*
  * 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 18 matching lines @@
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/events/EventListener.h"
 #include "core/events/EventTarget.h"
 #include "platform/Timer.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
+class GenericEventQueue;
 class HTMLMediaElement;
 class TextTrack;
 class TextTrackList;
 
 class TextTrackList : public RefCounted<TextTrackList>, public ScriptWrappable, public EventTargetWithInlineData {
     REFCOUNTED_EVENT_TARGET(TextTrackList);
 public:
     static PassRefPtr<TextTrackList> create(HTMLMediaElement* owner)
     {
         return adoptRef(new TextTrackList(owner));
     }
     ~TextTrackList();
 
     unsigned length() const;
     int getTrackIndex(TextTrack*);
     int getTrackIndexRelativeToRenderedTracks(TextTrack*);
     bool contains(TextTrack*) const;
 
     TextTrack* item(unsigned index);
     TextTrack* getTrackById(const AtomicString& id);
     void append(PassRefPtr<TextTrack>);
     void remove(TextTrack*);
 
     // EventTarget
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ExecutionContext* executionContext() const OVERRIDE;
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(addtrack);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(change);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(removetrack);
 
     void clearOwner() { m_owner = 0; }
     Node* owner() const;
 
-    bool isFiringEventListeners() { return m_dispatchingEvents; }
+    void scheduleChangeEvent();
 
 private:
     explicit TextTrackList(HTMLMediaElement*);
 
+    void scheduleTrackEvent(const AtomicString& eventName, PassRefPtr<TextTrack>);
+
     void scheduleAddTrackEvent(PassRefPtr<TextTrack>);
-    void asyncEventTimerFired(Timer<TextTrackList>*);
+    void scheduleRemoveTrackEvent(PassRefPtr<TextTrack>);
 
     void invalidateTrackIndexesAfterTrack(TextTrack*);
 
     HTMLMediaElement* m_owner;
 
-    Vector<RefPtr<Event> > m_pendingEvents;
-    Timer<TextTrackList> m_pendingEventTimer;
+    OwnPtr<GenericEventQueue> m_asyncEventQueue;
 
     Vector<RefPtr<TextTrack> > m_addTrackTracks;
     Vector<RefPtr<TextTrack> > m_elementTracks;
     Vector<RefPtr<TextTrack> > m_inbandTracks;
-
-    int m_dispatchingEvents;
 };
 
 } // namespace WebCore
 
 #endif