Standardize usage of virtual/override/final in gpu/

gpu/command_buffer/service/async_pixel_transfer_manager.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 GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_MANAGER_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 27 matching lines @@
   friend class base::RefCountedThreadSafe<AsyncPixelTransferCompletionObserver>;
 
   DISALLOW_COPY_AND_ASSIGN(AsyncPixelTransferCompletionObserver);
 };
 
 class GPU_EXPORT AsyncPixelTransferManager
     : public gles2::TextureManager::DestructionObserver {
  public:
   static AsyncPixelTransferManager* Create(gfx::GLContext* context);
 
-  virtual ~AsyncPixelTransferManager();
+  ~AsyncPixelTransferManager() override;
 
   void Initialize(gles2::TextureManager* texture_manager);
 
   virtual void BindCompletedAsyncTransfers() = 0;
 
   // There's no guarantee that callback will run on the caller thread.
   virtual void AsyncNotifyCompletion(
       const AsyncMemoryParams& mem_params,
       AsyncPixelTransferCompletionObserver* observer) = 0;
 
@@ skipping 16 matching lines @@
       const AsyncTexImage2DParams& define_params);
 
   AsyncPixelTransferDelegate* GetPixelTransferDelegate(
       gles2::TextureRef* ref);
 
   void ClearPixelTransferDelegateForTest(gles2::TextureRef* ref);
 
   bool AsyncTransferIsInProgress(gles2::TextureRef* ref);
 
   // gles2::TextureRef::DestructionObserver implementation:
-  virtual void OnTextureManagerDestroying(gles2::TextureManager* manager)
-      override;
-  virtual void OnTextureRefDestroying(gles2::TextureRef* texture) override;
+  void OnTextureManagerDestroying(gles2::TextureManager* manager) override;
+  void OnTextureRefDestroying(gles2::TextureRef* texture) override;
 
  protected:
   AsyncPixelTransferManager();
 
  private:
   gles2::TextureManager* manager_;
 
   typedef base::hash_map<gles2::TextureRef*,
                          linked_ptr<AsyncPixelTransferDelegate> >
       TextureToDelegateMap;
   TextureToDelegateMap delegate_map_;
 
   // A factory method called by CreatePixelTransferDelegate that is overriden
   // by each implementation.
   virtual AsyncPixelTransferDelegate* CreatePixelTransferDelegateImpl(
       gles2::TextureRef* ref,
       const AsyncTexImage2DParams& define_params) = 0;
 
   DISALLOW_COPY_AND_ASSIGN(AsyncPixelTransferManager);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_ASYNC_PIXEL_TRANSFER_MANAGER_H_