Reduce repetitive EventTarget subclassing

Source/core/loader/appcache/ApplicationCache.h

 /*
  * Copyright (C) 2008, 2009 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 23 matching lines @@
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class ExceptionState;
 class Frame;
 class KURL;
 
-class ApplicationCache : public ScriptWrappable, public RefCounted<ApplicationCache>, public EventTarget, public DOMWindowProperty {
+class ApplicationCache : public ScriptWrappable, public RefCounted<ApplicationCache>, public EventTargetWithInlineData, public DOMWindowProperty {
 public:
     static PassRefPtr<ApplicationCache> create(Frame* frame) { return adoptRef(new ApplicationCache(frame)); }
     ~ApplicationCache() { ASSERT(!m_frame); }
 
     virtual void willDestroyGlobalObjectInFrame() OVERRIDE;
 
     unsigned short status() const;
     void update(ExceptionState&);
     void swapCache(ExceptionState&);
     void abort();
 
     // EventTarget impl
 
     using RefCounted<ApplicationCache>::ref;
     using RefCounted<ApplicationCache>::deref;
 
     // Explicitly named attribute event listener helpers
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(checking);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(noupdate);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(downloading);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(progress);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(updateready);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(cached);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(obsolete);
 
-    virtual const AtomicString& interfaceName() const;
-    virtual ScriptExecutionContext* scriptExecutionContext() const;
+    virtual const AtomicString& interfaceName() const OVERRIDE;
+    virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE;
 
     static const AtomicString& toEventType(ApplicationCacheHost::EventID);
 
 private:
     explicit ApplicationCache(Frame*);
 
-    virtual void refEventTarget() { ref(); }
-    virtual void derefEventTarget() { deref(); }
-    virtual EventTargetData* eventTargetData();
-    virtual EventTargetData* ensureEventTargetData();
+    virtual void refEventTarget() OVERRIDE { ref(); }
+    virtual void derefEventTarget() OVERRIDE { deref(); }
 
     ApplicationCacheHost* applicationCacheHost() const;
-
-    EventTargetData m_eventTargetData;
 };
 
 } // namespace WebCore
 
 #endif // ApplicationCache_h