Standardize usage of virtual/override/final in cc/

cc/test/test_gpu_memory_buffer_manager.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 "cc/test/test_gpu_memory_buffer_manager.h"
 
 #include "base/logging.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
 namespace cc {
 namespace {
 
 class GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
  public:
   GpuMemoryBufferImpl(const gfx::Size& size, Format format)
       : size_(size),
         format_(format),
         pixels_(new uint8[size.GetArea() * BytesPerPixel(format)]),
         mapped_(false) {}
 
   // Overridden from gfx::GpuMemoryBuffer:
-  virtual void* Map() override {
+  void* Map() override {
     DCHECK(!mapped_);
     mapped_ = true;
     return pixels_.get();
   }
-  virtual void Unmap() override {
+  void Unmap() override {
     DCHECK(mapped_);
     mapped_ = false;
   }
-  virtual bool IsMapped() const override { return mapped_; }
-  virtual Format GetFormat() const override { return format_; }
-  virtual uint32 GetStride() const override {
+  bool IsMapped() const override { return mapped_; }
+  Format GetFormat() const override { return format_; }
+  uint32 GetStride() const override {
     return size_.width() * BytesPerPixel(format_);
   }
-  virtual gfx::GpuMemoryBufferHandle GetHandle() const override {
+  gfx::GpuMemoryBufferHandle GetHandle() const override {
     NOTREACHED();
     return gfx::GpuMemoryBufferHandle();
   }
-  virtual ClientBuffer AsClientBuffer() override {
+  ClientBuffer AsClientBuffer() override {
     return reinterpret_cast<ClientBuffer>(this);
   }
 
  private:
   static size_t BytesPerPixel(Format format) {
     switch (format) {
       case RGBA_8888:
       case RGBX_8888:
       case BGRA_8888:
         return 4;
@@ skipping 26 matching lines @@
       new GpuMemoryBufferImpl(size, format));
 }
 
 gfx::GpuMemoryBuffer*
 TestGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
     ClientBuffer buffer) {
   return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
 }
 
 }  // namespace cc