Make Pepper resize the buffer through the command buffer.

chrome/renderer/pepper_platform_context_3d_impl.h

 // Copyright (c) 2010 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 CHROME_RENDERER_PEPPER_PLATFORM_CONTEXT_3D_IMPL_H_
+#define CHROME_RENDERER_PEPPER_PLATFORM_CONTEXT_3D_IMPL_H_
 
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
 #ifdef ENABLE_GPU
 
 namespace ggl {
 
 class Context;
 
 }  // namespace ggl;
 
 class PlatformContext3DImpl
     : public webkit::ppapi::PluginDelegate::PlatformContext3D {
  public:
   explicit PlatformContext3DImpl(ggl::Context* parent_context);
   virtual ~PlatformContext3DImpl();
 
   virtual bool Init();
   virtual bool SwapBuffers();
   virtual unsigned GetError();
   virtual void SetSwapBuffersCallback(Callback0::Type* callback);
-  void ResizeBackingTexture(const gfx::Size& size);
   virtual unsigned GetBackingTextureId();
   virtual gpu::gles2::GLES2Implementation* GetGLES2Implementation();
 
  private:
   ggl::Context* parent_context_;
   ggl::Context* context_;
 };
 
 #endif  // ENABLE_GPU
 
+#endif  // CHROME_RENDERER_PEPPER_PLATFORM_CONTEXT_3D_IMPL_H_