Add GL_EXT_multisampled_render_to_texture support to command buffer.

gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h

 // Copyright (c) 2012 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 is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // DO NOT EDIT!
 
 // This file is included by gles2_interface_stub.cc.
 #ifndef GPU_COMMAND_BUFFER_CLIENT_GLES2_INTERFACE_STUB_IMPL_AUTOGEN_H_
@@ skipping 441 matching lines @@
 }
 void GLES2InterfaceStub::BlitFramebufferEXT(
     GLint /* srcX0 */, GLint /* srcY0 */, GLint /* srcX1 */, GLint /* srcY1 */,
     GLint /* dstX0 */, GLint /* dstY0 */, GLint /* dstX1 */, GLint /* dstY1 */,
     GLbitfield /* mask */, GLenum /* filter */) {
 }
 void GLES2InterfaceStub::RenderbufferStorageMultisampleEXT(
     GLenum /* target */, GLsizei /* samples */, GLenum /* internalformat */,
     GLsizei /* width */, GLsizei /* height */) {
 }
+void GLES2InterfaceStub::FramebufferTexture2DMultisampleEXT(
+    GLenum /* target */, GLenum /* attachment */, GLenum /* textarget */,
+    GLuint /* texture */, GLint /* level */, GLsizei /* samples */) {
+}
 void GLES2InterfaceStub::TexStorage2DEXT(
     GLenum /* target */, GLsizei /* levels */, GLenum /* internalFormat */,
     GLsizei /* width */, GLsizei /* height */) {
 }
 void GLES2InterfaceStub::GenQueriesEXT(
     GLsizei /* n */, GLuint* /* queries */) {
 }
 void GLES2InterfaceStub::DeleteQueriesEXT(
     GLsizei /* n */, const GLuint* /* queries */) {
 }
@@ skipping 180 matching lines @@
 GLuint GLES2InterfaceStub::InsertSyncPointCHROMIUM() {
   return 0;
 }
 void GLES2InterfaceStub::WaitSyncPointCHROMIUM(GLuint /* sync_point */) {
 }
 void GLES2InterfaceStub::DrawBuffersEXT(
     GLsizei /* count */, const GLenum* /* bufs */) {
 }
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_INTERFACE_STUB_IMPL_AUTOGEN_H_