Update accessibility classes to use OVERRIDE / FINAL when needed

Source/core/accessibility/AXScrollView.h

 /*
  * Copyright (C) 2011 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
@@ skipping 16 matching lines @@
 #define AXScrollView_h
 
 #include "core/accessibility/AXObject.h"
 
 namespace WebCore {
 
 class AXScrollbar;
 class Scrollbar;
 class ScrollView;
 
-class AXScrollView : public AXObject {
+class AXScrollView FINAL : public AXObject {
 public:
     static PassRefPtr<AXScrollView> create(ScrollView*);
-    virtual AccessibilityRole roleValue() const { return ScrollAreaRole; }
+    virtual AccessibilityRole roleValue() const OVERRIDE { return ScrollAreaRole; }
     ScrollView* scrollView() const { return m_scrollView; }
 
     virtual ~AXScrollView();
     virtual void detach() OVERRIDE;
 
 protected:
     virtual ScrollableArea* getScrollableAreaIfScrollable() const OVERRIDE;
     virtual void scrollTo(const IntPoint&) const OVERRIDE;
 
 private:
@@ skipping 28 matching lines @@
     RefPtr<AXObject> m_horizontalScrollbar;
     RefPtr<AXObject> m_verticalScrollbar;
     bool m_childrenDirty;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXScrollView, isAXScrollView());
 
 } // namespace WebCore
 
 #endif // AXScrollView_h