Standardize usage of virtual/override/final in cc/

cc/layers/painted_scrollbar_layer.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_LAYERS_PAINTED_SCROLLBAR_LAYER_H_
 #define CC_LAYERS_PAINTED_SCROLLBAR_LAYER_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/input/scrollbar.h"
 #include "cc/layers/contents_scaling_layer.h"
 #include "cc/layers/scrollbar_layer_interface.h"
 #include "cc/layers/scrollbar_theme_painter.h"
 #include "cc/resources/layer_updater.h"
 #include "cc/resources/scoped_ui_resource.h"
 
 namespace cc {
 class ScrollbarThemeComposite;
 
 class CC_EXPORT PaintedScrollbarLayer : public ScrollbarLayerInterface,
                                         public ContentsScalingLayer {
  public:
-  virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
-      override;
+  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
 
   static scoped_refptr<PaintedScrollbarLayer> Create(
       scoped_ptr<Scrollbar> scrollbar,
       int scroll_layer_id);
 
-  virtual bool OpacityCanAnimateOnImplThread() const override;
-  virtual ScrollbarLayerInterface* ToScrollbarLayer() override;
+  bool OpacityCanAnimateOnImplThread() const override;
+  ScrollbarLayerInterface* ToScrollbarLayer() override;
 
   // ScrollbarLayerInterface
-  virtual int ScrollLayerId() const override;
-  virtual void SetScrollLayer(int layer_id) override;
-  virtual void SetClipLayer(int layer_id) override;
+  int ScrollLayerId() const override;
+  void SetScrollLayer(int layer_id) override;
+  void SetClipLayer(int layer_id) override;
 
-  virtual ScrollbarOrientation orientation() const override;
+  ScrollbarOrientation orientation() const override;
 
   // Layer interface
-  virtual bool Update(ResourceUpdateQueue* queue,
-                      const OcclusionTracker<Layer>* occlusion) override;
-  virtual void SetLayerTreeHost(LayerTreeHost* host) override;
-  virtual void PushPropertiesTo(LayerImpl* layer) override;
-  virtual void PushScrollClipPropertiesTo(LayerImpl* layer) override;
-  virtual void CalculateContentsScale(float ideal_contents_scale,
-                                      float* contents_scale_x,
-                                      float* contents_scale_y,
-                                      gfx::Size* content_bounds) override;
+  bool Update(ResourceUpdateQueue* queue,
+              const OcclusionTracker<Layer>* occlusion) override;
+  void SetLayerTreeHost(LayerTreeHost* host) override;
+  void PushPropertiesTo(LayerImpl* layer) override;
+  void PushScrollClipPropertiesTo(LayerImpl* layer) override;
+  void CalculateContentsScale(float ideal_contents_scale,
+                              float* contents_scale_x,
+                              float* contents_scale_y,
+                              gfx::Size* content_bounds) override;
 
  protected:
   PaintedScrollbarLayer(scoped_ptr<Scrollbar> scrollbar, int scroll_layer_id);
-  virtual ~PaintedScrollbarLayer();
+  ~PaintedScrollbarLayer() override;
 
   // For unit tests
   UIResourceId track_resource_id() {
     return track_resource_.get() ? track_resource_->id() : 0;
   }
   UIResourceId thumb_resource_id() {
     return thumb_resource_.get() ? thumb_resource_->id() : 0;
   }
   void UpdateThumbAndTrackGeometry();
 
@@ skipping 30 matching lines @@
 
   scoped_ptr<ScopedUIResource> track_resource_;
   scoped_ptr<ScopedUIResource> thumb_resource_;
 
   DISALLOW_COPY_AND_ASSIGN(PaintedScrollbarLayer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_PAINTED_SCROLLBAR_LAYER_H_