Update rendering classes to use OVERRIDE / FINAL when needed

Source/core/rendering/RenderScrollbar.h

 /*
  * Copyright (C) 2008, 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 "wtf/HashMap.h"
 
 namespace WebCore {
 
 class Frame;
 class Node;
 class RenderBox;
 class RenderScrollbarPart;
 class RenderStyle;
 
-class RenderScrollbar : public Scrollbar {
+class RenderScrollbar FINAL : public Scrollbar {
 protected:
     RenderScrollbar(ScrollableArea*, ScrollbarOrientation, Node*, Frame*);
 
 public:
     friend class Scrollbar;
     static PassRefPtr<Scrollbar> createCustomScrollbar(ScrollableArea*, ScrollbarOrientation, Node*, Frame* owningFrame = 0);
     virtual ~RenderScrollbar();
 
     RenderBox* owningRenderer() const;
 
     void paintPart(GraphicsContext*, ScrollbarPart, const IntRect&);
 
     IntRect buttonRect(ScrollbarPart);
     IntRect trackRect(int startLength, int endLength);
     IntRect trackPieceRectWithMargins(ScrollbarPart, const IntRect&);
 
     int minimumThumbLength();
 
-    virtual bool isOverlayScrollbar() const { return false; }
+    virtual bool isOverlayScrollbar() const OVERRIDE { return false; }
 
 private:
     virtual void setParent(Widget*) OVERRIDE;
-    virtual void setEnabled(bool);
+    virtual void setEnabled(bool) OVERRIDE;
 
-    virtual void paint(GraphicsContext*, const IntRect& damageRect);
+    virtual void paint(GraphicsContext*, const IntRect& damageRect) OVERRIDE;
 
-    virtual void setHoveredPart(ScrollbarPart);
-    virtual void setPressedPart(ScrollbarPart);
+    virtual void setHoveredPart(ScrollbarPart) OVERRIDE;
+    virtual void setPressedPart(ScrollbarPart) OVERRIDE;
 
-    virtual void styleChanged();
+    virtual void styleChanged() OVERRIDE;
 
-    virtual bool isCustomScrollbar() const { return true; }
+    virtual bool isCustomScrollbar() const OVERRIDE { return true; }
 
     void updateScrollbarParts(bool destroy = false);
 
     PassRefPtr<RenderStyle> getScrollbarPseudoStyle(ScrollbarPart, PseudoId);
     void updateScrollbarPart(ScrollbarPart, bool destroy = false);
 
     // This Scrollbar(Widget) may outlive the DOM which created it (during tear down),
     // so we keep a reference to the Node which caused this custom scrollbar creation.
     // This will not create a reference cycle as the Widget tree is owned by our containing
     // FrameView which this Node pointer can in no way keep alive. See webkit bug 80610.
     RefPtr<Node> m_owner;
 
     Frame* m_owningFrame;
     HashMap<unsigned, RenderScrollbarPart*> m_parts;
 };
 
 DEFINE_TYPE_CASTS(RenderScrollbar, ScrollbarThemeClient, scrollbar, scrollbar->isCustomScrollbar(), scrollbar.isCustomScrollbar());
 
 } // namespace WebCore
 
 #endif // RenderScrollbar_h