Standardize usage of virtual/override/final in gpu/

gpu/command_buffer/service/async_pixel_transfer_manager_stub.cc

 // 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.
 
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_stub.h"
 
 #include "gpu/command_buffer/service/async_pixel_transfer_delegate.h"
 
 namespace gpu {
 
 class AsyncPixelTransferDelegateStub : public AsyncPixelTransferDelegate {
  public:
   AsyncPixelTransferDelegateStub();
-  virtual ~AsyncPixelTransferDelegateStub();
+  ~AsyncPixelTransferDelegateStub() override;
 
   // Implement AsyncPixelTransferDelegate:
-  virtual void AsyncTexImage2D(
-      const AsyncTexImage2DParams& tex_params,
-      const AsyncMemoryParams& mem_params,
-      const base::Closure& bind_callback) override;
-  virtual void AsyncTexSubImage2D(
-      const AsyncTexSubImage2DParams& tex_params,
-      const AsyncMemoryParams& mem_params) override;
-  virtual bool TransferIsInProgress() override;
-  virtual void WaitForTransferCompletion() override;
+  void AsyncTexImage2D(const AsyncTexImage2DParams& tex_params,
+                       const AsyncMemoryParams& mem_params,
+                       const base::Closure& bind_callback) override;
+  void AsyncTexSubImage2D(const AsyncTexSubImage2DParams& tex_params,
+                          const AsyncMemoryParams& mem_params) override;
+  bool TransferIsInProgress() override;
+  void WaitForTransferCompletion() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AsyncPixelTransferDelegateStub);
 };
 
 AsyncPixelTransferDelegateStub::AsyncPixelTransferDelegateStub() {}
 
 AsyncPixelTransferDelegateStub::~AsyncPixelTransferDelegateStub() {}
 
 void AsyncPixelTransferDelegateStub::AsyncTexImage2D(
@@ skipping 46 matching lines @@
 }
 
 AsyncPixelTransferDelegate*
 AsyncPixelTransferManagerStub::CreatePixelTransferDelegateImpl(
     gles2::TextureRef* ref,
     const AsyncTexImage2DParams& define_params) {
   return new AsyncPixelTransferDelegateStub();
 }
 
 }  // namespace gpu