Update {virtual,override,final} to follow C++11 style in gpu.

gpu/command_buffer/client/gl_in_process_context.cc

 // Copyright (c) 2012 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/client/gl_in_process_context.h"
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 50 matching lines @@
                   const scoped_refptr<InProcessCommandBuffer::Service>& service,
                   GpuMemoryBufferManager* gpu_memory_buffer_manager,
                   ImageFactory* image_factory);
 
   // GLInProcessContext implementation:
   void SetContextLostCallback(const base::Closure& callback) override;
   gles2::GLES2Implementation* GetImplementation() override;
   size_t GetMappedMemoryLimit() override;
 
 #if defined(OS_ANDROID)
-  virtual scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
+  scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
       uint32 stream_id) override;
 #endif
 
  private:
   void Destroy();
   void OnContextLost();
   void OnSignalSyncPoint(const base::Closure& callback);
 
   scoped_ptr<gles2::GLES2CmdHelper> gles2_helper_;
   scoped_ptr<TransferBuffer> transfer_buffer_;
@@ skipping 218 matching lines @@
                            gpu_preference,
                            service,
                            gpu_memory_buffer_manager,
                            image_factory))
     return NULL;
 
   return context.release();
 }
 
 }  // namespace gpu