Standardize usage of virtual/override/final in content/

content/common/gpu/gpu_memory_buffer_factory_mac.cc

 // Copyright 2014 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 "content/common/gpu/gpu_memory_buffer_factory.h"
 
 #include "base/logging.h"
 #include "content/common/gpu/gpu_memory_buffer_factory_io_surface.h"
 #include "ui/gl/gl_image.h"
 #include "ui/gl/gl_image_shared_memory.h"
 
 namespace content {
 namespace {
 
 class GpuMemoryBufferFactoryImpl : public GpuMemoryBufferFactory {
  public:
   // Overridden from GpuMemoryBufferFactory:
-  virtual gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
+  gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       gfx::GpuMemoryBuffer::Usage usage) override {
     switch (handle.type) {
       case gfx::IO_SURFACE_BUFFER:
         return io_surface_factory_.CreateGpuMemoryBuffer(
             handle.global_id, size, format);
       default:
         NOTREACHED();
         return gfx::GpuMemoryBufferHandle();
     }
   }
-  virtual void DestroyGpuMemoryBuffer(
+  void DestroyGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle) override {
     switch (handle.type) {
       case gfx::IO_SURFACE_BUFFER:
         io_surface_factory_.DestroyGpuMemoryBuffer(handle.global_id);
         break;
       default:
         NOTREACHED();
         break;
     }
   }
-  virtual scoped_refptr<gfx::GLImage> CreateImageForGpuMemoryBuffer(
+  scoped_refptr<gfx::GLImage> CreateImageForGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       unsigned internalformat,
       int client_id) override {
     switch (handle.type) {
       case gfx::SHARED_MEMORY_BUFFER: {
         scoped_refptr<gfx::GLImageSharedMemory> image(
             new gfx::GLImageSharedMemory(size, internalformat));
         if (!image->Initialize(handle, format))
@@ skipping 21 matching lines @@
 
 }  // namespace
 
 // static
 scoped_ptr<GpuMemoryBufferFactory> GpuMemoryBufferFactory::Create() {
   return make_scoped_ptr<GpuMemoryBufferFactory>(
       new GpuMemoryBufferFactoryImpl);
 }
 
 }  // namespace content