Standardize usage of virtual/override/final in gpu/

gpu/command_buffer/service/in_process_command_buffer.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/in_process_command_buffer.h"
 
 #include <queue>
 #include <set>
 #include <utility>
 
@@ skipping 44 matching lines @@
   completion->Signal();
 }
 
 class GpuInProcessThread
     : public base::Thread,
       public InProcessCommandBuffer::Service,
       public base::RefCountedThreadSafe<GpuInProcessThread> {
  public:
   GpuInProcessThread();
 
-  virtual void AddRef() const override {
+  void AddRef() const override {
     base::RefCountedThreadSafe<GpuInProcessThread>::AddRef();
   }
-  virtual void Release() const override {
+  void Release() const override {
     base::RefCountedThreadSafe<GpuInProcessThread>::Release();
   }
 
-  virtual void ScheduleTask(const base::Closure& task) override;
-  virtual void ScheduleIdleWork(const base::Closure& callback) override;
-  virtual bool UseVirtualizedGLContexts() override { return false; }
-  virtual scoped_refptr<gles2::ShaderTranslatorCache> shader_translator_cache()
+  void ScheduleTask(const base::Closure& task) override;
+  void ScheduleIdleWork(const base::Closure& callback) override;
+  bool UseVirtualizedGLContexts() override { return false; }
+  scoped_refptr<gles2::ShaderTranslatorCache> shader_translator_cache()
       override;
 
  private:
-  virtual ~GpuInProcessThread();
+  ~GpuInProcessThread() override;
   friend class base::RefCountedThreadSafe<GpuInProcessThread>;
 
   scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
   DISALLOW_COPY_AND_ASSIGN(GpuInProcessThread);
 };
 
 GpuInProcessThread::GpuInProcessThread() : base::Thread("GpuThread") {
   Start();
 }
 
@@ skipping 688 matching lines @@
 
 #if defined(OS_ANDROID)
 scoped_refptr<gfx::SurfaceTexture>
 InProcessCommandBuffer::GetSurfaceTexture(uint32 stream_id) {
   DCHECK(stream_texture_manager_);
   return stream_texture_manager_->GetSurfaceTexture(stream_id);
 }
 #endif
 
 }  // namespace gpu