Update DOM classes to use OVERRIDE / FINAL when needed

Source/core/dom/TouchController.h

 /*
 * Copyright (C) 2013 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 copyright
 *    notice, this list of conditions and the following disclaimer in the
@@ skipping 22 matching lines @@
 #include "platform/Supplementable.h"
 #include "wtf/HashSet.h"
 
 namespace WebCore {
 
 typedef HashCountedSet<Node*> TouchEventTargetSet;
 
 class Document;
 class DOMWindow;
 
-class TouchController : public DocumentSupplement, public DOMWindowLifecycleObserver, public DocumentLifecycleObserver {
+class TouchController FINAL : public DocumentSupplement, public DOMWindowLifecycleObserver, public DocumentLifecycleObserver {
 
 public:
     virtual ~TouchController();
 
     static const char* supplementName();
     static TouchController* from(Document*);
 
     bool hasTouchEventHandlers() const { return m_touchEventTargets ? m_touchEventTargets->size() : false; }
 
     void didAddTouchEventHandler(Document*, Node*);
@@ skipping 13 matching lines @@
 
 private:
     explicit TouchController(Document*);
 
     OwnPtr<TouchEventTargetSet> m_touchEventTargets;
 };
 
 } // namespace WebCore
 
 #endif // TouchController_h