Update XML classes to use OVERRIDE / FINAL when needed

Source/core/xml/XMLHttpRequestUpload.h

 /*
  * Copyright (C) 2008 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 26 matching lines @@
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicStringHash.h"
 
 namespace WebCore {
 
 class ExecutionContext;
 class XMLHttpRequest;
 
-class XMLHttpRequestUpload : public ScriptWrappable, public XMLHttpRequestEventTarget {
+class XMLHttpRequestUpload FINAL : public ScriptWrappable, public XMLHttpRequestEventTarget {
 public:
     static PassOwnPtr<XMLHttpRequestUpload> create(XMLHttpRequest* xmlHttpRequest)
     {
         return adoptPtr(new XMLHttpRequestUpload(xmlHttpRequest));
     }
 
     void ref() { m_xmlHttpRequest->ref(); }
     void deref() { m_xmlHttpRequest->deref(); }
     XMLHttpRequest* xmlHttpRequest() const { return m_xmlHttpRequest; }
 
@@ skipping 16 matching lines @@
 
     // Last progress event values; used when issuing the
     // required 'progress' event on a request error or abort.
     unsigned long long m_lastBytesSent;
     unsigned long long m_lastTotalBytesToBeSent;
 };
 
 } // namespace WebCore
 
 #endif // XMLHttpRequestUpload_h