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

ppapi/shared_impl/ppb_graphics_3d_shared.h

 // 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.
 
 #ifndef PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
 #define PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/c/pp_completion_callback.h"
@@ skipping 12 matching lines @@
 }  // namespace gles2
 }  // namespace gpu.
 
 namespace ppapi {
 
 class PPAPI_SHARED_EXPORT PPB_Graphics3D_Shared
     : public Resource,
       public thunk::PPB_Graphics3D_API {
  public:
   // Resource overrides.
-  virtual thunk::PPB_Graphics3D_API* AsPPB_Graphics3D_API() override;
+  thunk::PPB_Graphics3D_API* AsPPB_Graphics3D_API() override;
 
   // PPB_Graphics3D_API implementation.
-  virtual int32_t GetAttribs(int32_t attrib_list[]) override;
-  virtual int32_t SetAttribs(const int32_t attrib_list[]) override;
-  virtual int32_t GetError() override;
-  virtual int32_t ResizeBuffers(int32_t width, int32_t height) override;
-  virtual int32_t SwapBuffers(scoped_refptr<TrackedCallback> callback) override;
-  virtual int32_t GetAttribMaxValue(int32_t attribute, int32_t* value) override;
+  int32_t GetAttribs(int32_t attrib_list[]) override;
+  int32_t SetAttribs(const int32_t attrib_list[]) override;
+  int32_t GetError() override;
+  int32_t ResizeBuffers(int32_t width, int32_t height) override;
+  int32_t SwapBuffers(scoped_refptr<TrackedCallback> callback) override;
+  int32_t GetAttribMaxValue(int32_t attribute, int32_t* value) override;
 
-  virtual void* MapTexSubImage2DCHROMIUM(GLenum target,
-                                         GLint level,
-                                         GLint xoffset,
-                                         GLint yoffset,
-                                         GLsizei width,
-                                         GLsizei height,
-                                         GLenum format,
-                                         GLenum type,
-                                         GLenum access) override;
-  virtual void UnmapTexSubImage2DCHROMIUM(const void* mem) override;
+  void* MapTexSubImage2DCHROMIUM(GLenum target,
+                                 GLint level,
+                                 GLint xoffset,
+                                 GLint yoffset,
+                                 GLsizei width,
+                                 GLsizei height,
+                                 GLenum format,
+                                 GLenum type,
+                                 GLenum access) override;
+  void UnmapTexSubImage2DCHROMIUM(const void* mem) override;
 
   gpu::gles2::GLES2Implementation* gles2_impl() { return gles2_impl_.get(); }
 
   // Sends swap-buffers notification to the plugin.
   void SwapBuffersACK(int32_t pp_error);
 
  protected:
   PPB_Graphics3D_Shared(PP_Instance instance);
   PPB_Graphics3D_Shared(const HostResource& host_resource);
-  virtual ~PPB_Graphics3D_Shared();
+  ~PPB_Graphics3D_Shared() override;
 
   virtual gpu::CommandBuffer* GetCommandBuffer() = 0;
   virtual gpu::GpuControl* GetGpuControl() = 0;
   virtual int32 DoSwapBuffers() = 0;
 
   bool HasPendingSwap() const;
   bool CreateGLES2Impl(int32 command_buffer_size,
                        int32 transfer_buffer_size,
                        gpu::gles2::GLES2Implementation* share_gles2);
   void DestroyGLES2Impl();
 
  private:
   scoped_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
   scoped_ptr<gpu::TransferBuffer> transfer_buffer_;
   scoped_ptr<gpu::gles2::GLES2Implementation> gles2_impl_;
 
   // Callback that needs to be executed when swap-buffers is completed.
   scoped_refptr<TrackedCallback> swap_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Graphics3D_Shared);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_