Update Event classes to use OVERRIDE / FINAL when needed

Source/core/events/CompositionEvent.h

 /*
  * Copyright (C) 2009 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 20 matching lines @@
 #include "core/events/UIEvent.h"
 
 namespace WebCore {
 
 struct CompositionEventInit : UIEventInit {
     CompositionEventInit();
 
     String data;
 };
 
-class CompositionEvent : public UIEvent {
+class CompositionEvent FINAL : public UIEvent {
 public:
     static PassRefPtr<CompositionEvent> create()
     {
         return adoptRef(new CompositionEvent);
     }
 
     static PassRefPtr<CompositionEvent> create(const AtomicString& type, PassRefPtr<AbstractView> view, const String& data)
     {
         return adoptRef(new CompositionEvent(type, view, data));
     }
@@ skipping 10 matching lines @@
 
     virtual ~CompositionEvent();
 
     void initCompositionEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView>, const String& data);
 
     String data() const { return m_data; }
     int activeSegmentStart() const { return m_activeSegmentStart; }
     int activeSegmentEnd() const { return m_activeSegmentEnd; }
     const Vector<unsigned>& getSegments() const { return m_segments; }
 
-    virtual const AtomicString& interfaceName() const;
+    virtual const AtomicString& interfaceName() const OVERRIDE;
 
 private:
     CompositionEvent();
     CompositionEvent(const AtomicString& type, PassRefPtr<AbstractView>, const String&);
     CompositionEvent(const AtomicString& type, PassRefPtr<AbstractView>, const String&, const Vector<CompositionUnderline>& underlines);
     CompositionEvent(const AtomicString& type, const CompositionEventInit&);
     void initializeSegments(const Vector<CompositionUnderline>* = 0);
 
     String m_data;
     int m_activeSegmentStart;
     int m_activeSegmentEnd;
     Vector<unsigned> m_segments;
 };
 
 } // namespace WebCore
 
 #endif // CompositionEvent_h