Make WebGraphics3DCommandBufferImpl use GLES2Implemenation directly.

content/renderer/webgraphicscontext3d_command_buffer_impl.h

 // Copyright (c) 2011 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 CONTENT_RENDERER_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 #define CONTENT_RENDERER_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 #pragma once
 
 #if defined(ENABLE_GPU)
 
@@ skipping 420 matching lines @@
   virtual void setContextLostCallback(
       WebGraphicsContext3D::WebGraphicsContextLostCallback* callback);
 
  private:
   // SwapBuffers callback.
   void OnSwapBuffersComplete();
   virtual void OnContextLost();
 
   // The context we use for OpenGL rendering.
   RendererGLContext* context_;
+  // The GLES2Implementation we use for OpenGL rendering.
+  gpu::gles2::GLES2Implementation* gl_;
+
   // If rendering directly to WebView, weak pointer to it.
   WebKit::WebView* web_view_;
 #if defined(OS_MACOSX)
   // "Fake" plugin window handle in browser process for the compositor's output.
   gfx::PluginWindowHandle plugin_handle_;
 #endif
   WebGraphicsContext3D::WebGraphicsContextLostCallback* context_lost_callback_;
 
   WebKit::WebGraphicsContext3D::Attributes attributes_;
   int cached_width_, cached_height_;
 
   // For tracking which FBO is bound.
   WebGLId bound_fbo_;
 
   // Errors raised by synthesizeGLError().
   std::vector<WGC3Denum> synthetic_errors_;
 
 #ifdef FLIP_FRAMEBUFFER_VERTICALLY
   scoped_array<uint8> scanline_;
   void FlipVertically(uint8* framebuffer,
                       unsigned int width,
                       unsigned int height);
 #endif
 };
 
 #endif  // defined(ENABLE_GPU)
 #endif  // CONTENT_RENDERER_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_