Adds support for the GL_ANGLE_texture_usage and GL_EXT_texture_storage

content/renderer/gpu/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_GPU_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 #define CONTENT_RENDERER_GPU_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 #pragma once
 
 #if defined(ENABLE_GPU)
 
@@ skipping 443 matching lines @@
   virtual WGC3Denum getGraphicsResetStatusARB();
 
   virtual void setSwapBuffersCompleteCallbackCHROMIUM(
       WebGraphicsContext3D::
           WebGraphicsSwapBuffersCompleteCallbackCHROMIUM* callback);
 
   virtual void texImageIOSurface2DCHROMIUM(
       WGC3Denum target, WGC3Dint width, WGC3Dint height,
       WGC3Duint ioSurfaceId, WGC3Duint plane);
 
+  virtual void texStorage2DEXT(
+      WGC3Denum target, WGC3Dint levels, WGC3Duint internalformat,
+      WGC3Dint width, WGC3Dint height);
+
  protected:
 #if WEBKIT_USING_SKIA
   virtual GrGLInterface* onCreateGrGLInterface();
 #endif
 
  private:
   // Initialize the underlying GL context. May be called multiple times; second
   // and subsequent calls are ignored. Must be called from the thread that is
   // going to use this object to issue GL commands (which might not be the main
   // thread).
@@ skipping 44 matching lines @@
 #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_GPU_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_