Fix virtual/override/final usage in Source/core/layout/.

Source/core/layout/compositing/DeprecatedPaintLayerCompositor.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 50 matching lines @@
 // composited Layers. It determines which Layers
 // become compositing, and creates and maintains a hierarchy of
 // GraphicsLayers based on the Layer painting order.
 //
 // There is one DeprecatedPaintLayerCompositor per LayoutView.
 
 class CORE_EXPORT DeprecatedPaintLayerCompositor final : public GraphicsLayerClient {
     WTF_MAKE_FAST_ALLOCATED(DeprecatedPaintLayerCompositor);
 public:
     explicit DeprecatedPaintLayerCompositor(LayoutView&);
-    virtual ~DeprecatedPaintLayerCompositor();
+    ~DeprecatedPaintLayerCompositor() override;
 
     void updateIfNeededRecursive();
 
     // Return true if this LayoutView is in "compositing mode" (i.e. has one or more
     // composited Layers)
     bool inCompositingMode() const;
     // FIXME: Replace all callers with inCompositingMode and remove this function.
     bool staleInCompositingMode() const;
     // This will make a compositing layer at the root automatically, and hook up to
     // the native view/window system.
@@ skipping 67 matching lines @@
 
     String layerTreeAsText(LayerTreeFlags);
 
     GraphicsLayer* layerForHorizontalScrollbar() const { return m_layerForHorizontalScrollbar.get(); }
     GraphicsLayer* layerForVerticalScrollbar() const { return m_layerForVerticalScrollbar.get(); }
     GraphicsLayer* layerForScrollCorner() const { return m_layerForScrollCorner.get(); }
 
     void resetTrackedPaintInvalidationRects();
     void setTracksPaintInvalidations(bool);
 
-    virtual String debugName(const GraphicsLayer*) override;
+    String debugName(const GraphicsLayer*) override;
     DocumentLifecycle& lifecycle() const;
 
     bool needsUpdateDescendantDependentFlags() const { return m_needsUpdateDescendantDependentFlags; }
     void setNeedsUpdateDescendantDependentFlags() { m_needsUpdateDescendantDependentFlags = true; }
 
     void updatePotentialCompositingReasonsFromStyle(DeprecatedPaintLayer*);
 
     // Whether the layer could ever be composited.
     bool canBeComposited(const DeprecatedPaintLayer*) const;
 
     // FIXME: Move allocateOrClearCompositedDeprecatedPaintLayerMapping to CompositingLayerAssigner once we've fixed
     // the compositing chicken/egg issues.
     bool allocateOrClearCompositedDeprecatedPaintLayerMapping(DeprecatedPaintLayer*, CompositingStateTransitionType compositedLayerUpdate);
 
     void updateDirectCompositingReasons(DeprecatedPaintLayer*);
 
     bool inOverlayFullscreenVideo() const { return m_inOverlayFullscreenVideo; }
 
 private:
 #if ENABLE(ASSERT)
     void assertNoUnresolvedDirtyBits();
 #endif
 
     // GraphicsLayerClient implementation
-    virtual void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect&) override;
+    void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect&) override;
 
-    virtual bool isTrackingPaintInvalidations() const override;
+    bool isTrackingPaintInvalidations() const override;
 
     void updateWithoutAcceleratedCompositing(CompositingUpdateType);
     void updateIfNeeded();
 
     void ensureRootLayer();
     void destroyRootLayer();
 
     void attachRootLayer(RootLayerAttachment);
     void detachRootLayer();
 
@@ skipping 50 matching lines @@
 
     // Layers for overflow controls
     OwnPtr<GraphicsLayer> m_layerForHorizontalScrollbar;
     OwnPtr<GraphicsLayer> m_layerForVerticalScrollbar;
     OwnPtr<GraphicsLayer> m_layerForScrollCorner;
 };
 
 } // namespace blink
 
 #endif // DeprecatedPaintLayerCompositor_h