Inherit EventTarget interface instead of duplicating its code

Source/modules/websockets/WebSocket.h

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 30 matching lines @@
 #include "weborigin/KURL.h"
 #include "wtf/Forward.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/AtomicStringHash.h"
 
 namespace WebCore {
 
 class Blob;
 
-class WebSocket : public RefCounted<WebSocket>, public ScriptWrappable, public EventTarget, public ActiveDOMObject, public WebSocketChannelClient {
+class WebSocket : public EventTarget, public RefCounted<WebSocket>, public ScriptWrappable, public ActiveDOMObject, public WebSocketChannelClient {
 public:
     static const char* subProtocolSeperator();
     static PassRefPtr<WebSocket> create(ScriptExecutionContext*);
     static PassRefPtr<WebSocket> create(ScriptExecutionContext*, const String& url, ExceptionCode&);
     static PassRefPtr<WebSocket> create(ScriptExecutionContext*, const String& url, const String& protocol, ExceptionCode&);
     static PassRefPtr<WebSocket> create(ScriptExecutionContext*, const String& url, const Vector<String>& protocols, ExceptionCode&);
     virtual ~WebSocket();
 
     enum State {
         CONNECTING = 0,
@@ skipping 94 matching lines @@
     unsigned long m_bufferedAmount;
     unsigned long m_bufferedAmountAfterClose;
     BinaryType m_binaryType;
     String m_subprotocol;
     String m_extensions;
 };
 
 } // namespace WebCore
 
 #endif // WebSocket_h