Standardize usage of virtual/override/final in cc/

cc/layers/video_layer_impl.h

 // Copyright 2012 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_VIDEO_LAYER_IMPL_H_
 #define CC_LAYERS_VIDEO_LAYER_IMPL_H_
 
 #include <vector>
 
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/resources/release_callback_impl.h"
 #include "cc/resources/video_resource_updater.h"
 #include "media/base/video_rotation.h"
 
 namespace media {
 class VideoFrame;
 }
 
 namespace cc {
 class VideoFrameProvider;
 class VideoFrameProviderClientImpl;
 
 class CC_EXPORT VideoLayerImpl : public LayerImpl {
  public:
   static scoped_ptr<VideoLayerImpl> Create(LayerTreeImpl* tree_impl,
                                            int id,
                                            VideoFrameProvider* provider,
                                            media::VideoRotation video_rotation);
-  virtual ~VideoLayerImpl();
+  ~VideoLayerImpl() override;
 
   // LayerImpl implementation.
-  virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
-      override;
-  virtual void PushPropertiesTo(LayerImpl* layer) override;
-  virtual bool WillDraw(DrawMode draw_mode,
-                        ResourceProvider* resource_provider) override;
-  virtual void AppendQuads(RenderPass* render_pass,
-                           const Occlusion& occlusion_in_content_space,
-                           AppendQuadsData* append_quads_data) override;
-  virtual void DidDraw(ResourceProvider* resource_provider) override;
-  virtual void DidBecomeActive() override;
-  virtual void ReleaseResources() override;
+  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
+  void PushPropertiesTo(LayerImpl* layer) override;
+  bool WillDraw(DrawMode draw_mode,
+                ResourceProvider* resource_provider) override;
+  void AppendQuads(RenderPass* render_pass,
+                   const Occlusion& occlusion_in_content_space,
+                   AppendQuadsData* append_quads_data) override;
+  void DidDraw(ResourceProvider* resource_provider) override;
+  void DidBecomeActive() override;
+  void ReleaseResources() override;
 
   void SetNeedsRedraw();
 
   void SetProviderClientImpl(
       scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl);
 
   media::VideoRotation video_rotation() const { return video_rotation_; }
 
  private:
   VideoLayerImpl(LayerTreeImpl* tree_impl,
                  int id,
                  media::VideoRotation video_rotation);
 
-  virtual const char* LayerTypeAsString() const override;
+  const char* LayerTypeAsString() const override;
 
   scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl_;
 
   scoped_refptr<media::VideoFrame> frame_;
 
   media::VideoRotation video_rotation_;
 
   scoped_ptr<VideoResourceUpdater> updater_;
   VideoFrameExternalResources::ResourceType frame_resource_type_;
   std::vector<ResourceProvider::ResourceId> frame_resources_;
 
   // TODO(danakj): Remove these, hide software path inside ResourceProvider and
   // ExternalResource (aka TextureMailbox) classes.
   std::vector<unsigned> software_resources_;
   // Called once for each software resource.
   ReleaseCallbackImpl software_release_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_VIDEO_LAYER_IMPL_H_