Update rendering classes to use OVERRIDE / FINAL when needed

Source/core/rendering/CompositedLayerMapping.h

 /*
  * Copyright (C) 2009, 2010, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 55 matching lines @@
     bool isBackgroundLayer;
 };
 
 // CompositedLayerMapping keeps track of how RenderLayers of the render tree correspond to
 // GraphicsLayers of the composited layer tree. Each instance of CompositedLayerMapping
 // manages a small cluster of GraphicsLayers and the references to which RenderLayers
 // and paint phases contribute to each GraphicsLayer.
 //
 // Currently (Oct. 2013) there is one CompositedLayerMapping for each RenderLayer,
 // but this is likely to evolve soon.
-class CompositedLayerMapping : public GraphicsLayerClient {
+class CompositedLayerMapping FINAL : public GraphicsLayerClient {
     WTF_MAKE_NONCOPYABLE(CompositedLayerMapping); WTF_MAKE_FAST_ALLOCATED;
 public:
     explicit CompositedLayerMapping(RenderLayer*);
     ~CompositedLayerMapping();
 
     RenderLayer* owningLayer() const { return m_owningLayer; }
 
     enum UpdateAfterLayoutFlag {
         CompositingChildrenOnly = 1 << 0,
         NeedsFullRepaint = 1 << 1,
@@ skipping 79 matching lines @@
     void finishAccumulatingSquashingLayers(size_t nextSquashedLayerIndex);
 
     // GraphicsLayerClient interface
     virtual void notifyAnimationStarted(const GraphicsLayer*, double wallClockTime, double monotonicTime) OVERRIDE;
     virtual void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect& clip) OVERRIDE;
     virtual bool isTrackingRepaints() const OVERRIDE;
 
     PassOwnPtr<Vector<FloatRect> > collectTrackedRepaintRects() const;
 
 #ifndef NDEBUG
-    virtual void verifyNotPainting();
+    virtual void verifyNotPainting() OVERRIDE;
 #endif
 
     LayoutRect contentsBox() const;
     IntRect backgroundBox() const;
 
     // For informative purposes only.
     CompositingLayerType compositingLayerType() const;
 
     GraphicsLayer* layerForHorizontalScrollbar() const { return m_layerForHorizontalScrollbar.get(); }
     GraphicsLayer* layerForVerticalScrollbar() const { return m_layerForVerticalScrollbar.get(); }
@@ skipping 165 matching lines @@
     bool m_isMainFrameRenderViewLayer;
     bool m_requiresOwnBackingStoreForIntrinsicReasons;
     bool m_requiresOwnBackingStoreForAncestorReasons;
     bool m_canCompositeFilters;
     bool m_backgroundLayerPaintsFixedRootBackground;
 };
 
 } // namespace WebCore
 
 #endif // CompositedLayerMapping_h