Make Pepper resize the buffer through the command buffer.

chrome/renderer/pepper_platform_context_3d_impl.h

Index: chrome/renderer/pepper_platform_context_3d_impl.h
diff --git a/chrome/renderer/pepper_platform_context_3d_impl.h b/chrome/renderer/pepper_platform_context_3d_impl.h
index 6d049c07dadcd4c6e26f0c5865e70d5b72fecf62..1a34f98a0e91ccaedd64fe83f3c9047971c0544c 100644
--- a/chrome/renderer/pepper_platform_context_3d_impl.h
+++ b/chrome/renderer/pepper_platform_context_3d_impl.h
@@ -1,6 +1,8 @@
 // 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"
 
@@ -22,7 +24,6 @@ class PlatformContext3DImpl
   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();
 
@@ -33,3 +34,4 @@ class PlatformContext3DImpl
 
 #endif  // ENABLE_GPU
 
+#endif  // CHROME_RENDERER_PEPPER_PLATFORM_CONTEXT_3D_IMPL_H_