Inherit EventTarget interface instead of duplicating its code

Source/core/loader/appcache/DOMApplicationCache.h

Index: Source/core/loader/appcache/DOMApplicationCache.h
diff --git a/Source/core/loader/appcache/DOMApplicationCache.h b/Source/core/loader/appcache/DOMApplicationCache.h
index a20d8faf878e2546cc9f24e11f7fda442639d076..0ce62aa88e5e6d9ab157bb0da190ca8d509ccdfc 100644
--- a/Source/core/loader/appcache/DOMApplicationCache.h
+++ b/Source/core/loader/appcache/DOMApplicationCache.h
@@ -40,7 +40,7 @@ namespace WebCore {
 class Frame;
 class KURL;
 
-class DOMApplicationCache : public ScriptWrappable, public RefCounted<DOMApplicationCache>, public EventTarget, public DOMWindowProperty {
+class DOMApplicationCache : public EventTarget, public ScriptWrappable, public RefCounted<DOMApplicationCache>, public DOMWindowProperty {
 public:
     static PassRefPtr<DOMApplicationCache> create(Frame* frame) { return adoptRef(new DOMApplicationCache(frame)); }
     ~DOMApplicationCache() { ASSERT(!m_frame); }