Reduce repetitive EventTarget subclassing

Source/core/html/MediaController.h

 /*
  * Copyright (C) 2011 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 25 matching lines @@
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 class Clock;
 class Event;
 class ExceptionState;
 class HTMLMediaElement;
 class ScriptExecutionContext;
 
-class MediaController : public RefCounted<MediaController>, public ScriptWrappable, public MediaControllerInterface, public EventTarget {
+class MediaController : public RefCounted<MediaController>, public ScriptWrappable, public MediaControllerInterface, public EventTargetWithInlineData {
 public:
     static PassRefPtr<MediaController> create(ScriptExecutionContext*);
     virtual ~MediaController();
 
     void addMediaElement(HTMLMediaElement*);
     void removeMediaElement(HTMLMediaElement*);
     bool containsMediaElement(HTMLMediaElement*) const;
 
     const String& mediaGroup() const { return m_mediaGroup; }
 
@@ skipping 61 matching lines @@
     void bringElementUpToSpeed(HTMLMediaElement*);
     void scheduleEvent(const AtomicString& eventName);
     void asyncEventTimerFired(Timer<MediaController>*);
     void clearPositionTimerFired(Timer<MediaController>*);
     bool hasEnded() const;
     void scheduleTimeupdateEvent();
     void timeupdateTimerFired(Timer<MediaController>*);
     void startTimeupdateTimer();
 
     // EventTarget
-    virtual void refEventTarget() { ref(); }
-    virtual void derefEventTarget() { deref(); }
-    virtual const AtomicString& interfaceName() const;
-    virtual ScriptExecutionContext* scriptExecutionContext() const { return m_scriptExecutionContext; };
-    virtual EventTargetData* eventTargetData() { return &m_eventTargetData; }
-    virtual EventTargetData* ensureEventTargetData() { return &m_eventTargetData; }
-    EventTargetData m_eventTargetData;
+    virtual void refEventTarget() OVERRIDE { ref(); }
+    virtual void derefEventTarget() OVERRIDE { deref(); }
+    virtual const AtomicString& interfaceName() const OVERRIDE;
+    virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE { return m_scriptExecutionContext; }
 
     friend class HTMLMediaElement;
     friend class MediaControllerEventListener;
     Vector<HTMLMediaElement*> m_mediaElements;
     bool m_paused;
     double m_defaultPlaybackRate;
     double m_volume;
     mutable double m_position;
     bool m_muted;
     ReadyState m_readyState;
     PlaybackState m_playbackState;
     Vector<RefPtr<Event> > m_pendingEvents;
     Timer<MediaController> m_asyncEventTimer;
     mutable Timer<MediaController> m_clearPositionTimer;
     String m_mediaGroup;
     bool m_closedCaptionsVisible;
     OwnPtr<Clock> m_clock;
     ScriptExecutionContext* m_scriptExecutionContext;
     Timer<MediaController> m_timeupdateTimer;
     double m_previousTimeupdateTime;
 };
 
 } // namespace WebCore
 
 #endif