Update DOM classes to use OVERRIDE / FINAL when needed

Source/core/dom/DOMSettableTokenList.h

 /*
  * Copyright (C) 2010 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:
  * 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 16 matching lines @@
 
 #include "core/dom/DOMTokenList.h"
 #include "core/dom/SpaceSplitString.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/AtomicString.h"
 
 namespace WebCore {
 
 class ExceptionState;
 
-class DOMSettableTokenList : public DOMTokenList, public RefCounted<DOMSettableTokenList> {
+class DOMSettableTokenList FINAL : public DOMTokenList, public RefCounted<DOMSettableTokenList> {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     static PassRefPtr<DOMSettableTokenList> create()
     {
         return adoptRef(new DOMSettableTokenList());
     }
     virtual ~DOMSettableTokenList();
 
     virtual void ref() OVERRIDE { RefCounted<DOMSettableTokenList>::ref(); }
     virtual void deref() OVERRIDE { RefCounted<DOMSettableTokenList>::deref(); }
@@ skipping 17 matching lines @@
     virtual bool containsInternal(const AtomicString&) const OVERRIDE;
     virtual void removeInternal(const AtomicString&) OVERRIDE;
 
     AtomicString m_value;
     SpaceSplitString m_tokens;
 };
 
 } // namespace WebCore
 
 #endif // DOMSettableTokenList_h