Standardize usage of virtual/override/final in content/

content/common/gpu/client/gpu_memory_buffer_impl_io_surface.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 CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
 #define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
 
 #include <IOSurface/IOSurfaceAPI.h>
 
 #include "base/mac/scoped_cftyperef.h"
@@ skipping 19 matching lines @@
       const gfx::Size& size,
       Format format,
       const DestructionCallback& callback);
 
   static bool IsFormatSupported(Format format);
   static bool IsUsageSupported(Usage usage);
   static bool IsConfigurationSupported(Format format, Usage usage);
   static uint32 PixelFormat(Format format);
 
   // Overridden from gfx::GpuMemoryBuffer:
-  virtual void* Map() override;
-  virtual void Unmap() override;
-  virtual uint32 GetStride() const override;
-  virtual gfx::GpuMemoryBufferHandle GetHandle() const override;
+  void* Map() override;
+  void Unmap() override;
+  uint32 GetStride() const override;
+  gfx::GpuMemoryBufferHandle GetHandle() const override;
 
  private:
   GpuMemoryBufferImplIOSurface(const gfx::Size& size,
                                Format format,
                                const DestructionCallback& callback,
                                IOSurfaceRef io_surface);
-  virtual ~GpuMemoryBufferImplIOSurface();
+  ~GpuMemoryBufferImplIOSurface() override;
 
   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplIOSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_