Adds support for the GL_ANGLE_texture_usage and GL_EXT_texture_storage

ui/gfx/gl/gl_interface.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.
 
 // This file implements glue to a GL interface so we can mock it for unit
 // testing. It has to be Desktop GL, not GLES2 as it is used to test the service
 // side code.
 
 #ifndef UI_GFX_GL_GL_INTERFACE_H_
 #define UI_GFX_GL_GL_INTERFACE_H_
@@ skipping 443 matching lines @@
   virtual void TexParameterfv(GLenum target,
                               GLenum pname,
                               const GLfloat* params) = 0;
 
   virtual void TexParameteri(GLenum target, GLenum pname, GLint param) = 0;
 
   virtual void TexParameteriv(GLenum target,
                               GLenum pname,
                               const GLint* params) = 0;
 
+  virtual void TexStorage2DEXT(GLenum target,
+                               GLsizei levels,
+                               GLenum internalformat,
+                               GLsizei width,
+                               GLsizei height) = 0;
+
   virtual void TexSubImage2D(GLenum target,
                              GLint level,
                              GLint xoffset, GLint yoffset,
                              GLsizei width, GLsizei height,
                              GLenum format,
                              GLenum type,
                              const void* pixels) = 0;
 
   virtual void Uniform1f(GLint location, GLfloat x) = 0;
 
@@ skipping 110 matching lines @@
 
   virtual GLenum GetGraphicsResetStatusARB() = 0;
 
  private:
   static GLInterface* interface_;
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_GL_GL_INTERFACE_H_