Update page & frame classes to use OVERRIDE / FINAL when needed

Source/core/frame/DOMWindowLifecycleNotifier.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:
  * 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 18 matching lines @@
 #include "core/frame/DOMWindowLifecycleObserver.h"
 #include "platform/LifecycleNotifier.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/TemporaryChange.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class DOMWindow;
 
-class DOMWindowLifecycleNotifier : public LifecycleNotifier<DOMWindow> {
+class DOMWindowLifecycleNotifier FINAL : public LifecycleNotifier<DOMWindow> {
 public:
     static PassOwnPtr<DOMWindowLifecycleNotifier> create(DOMWindow*);
 
     void notifyAddEventListener(DOMWindow*, const AtomicString& eventType);
     void notifyRemoveEventListener(DOMWindow*, const AtomicString& eventType);
     void notifyRemoveAllEventListeners(DOMWindow*);
 
     virtual void addObserver(Observer*) OVERRIDE;
     virtual void removeObserver(Observer*) OVERRIDE;
 
 private:
     explicit DOMWindowLifecycleNotifier(DOMWindow*);
 
     typedef HashSet<DOMWindowLifecycleObserver*> DOMWindowObserverSet;
     DOMWindowObserverSet m_windowObservers;
 };
 
 } // namespace WebCore
 
 #endif // DOMWindowLifecycleNotifier_h