Add support for GL_CHROMIUM_pixel_transfer_buffer_object.

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 502 matching lines @@
 void GLES2InterfaceStub::DeleteSharedIdsCHROMIUM(
     GLuint /* namespace_id */, GLsizei /* n */, const GLuint* /* ids */) {
 }
 void GLES2InterfaceStub::RegisterSharedIdsCHROMIUM(
     GLuint /* namespace_id */, GLsizei /* n */, const GLuint* /* ids */) {
 }
 GLboolean GLES2InterfaceStub::EnableFeatureCHROMIUM(
     const char* /* feature */) {
   return 0;
 }
+void* GLES2InterfaceStub::MapBufferCHROMIUM(
+    GLuint /* target */, GLenum /* access */) {
+  return 0;
+}
+GLboolean GLES2InterfaceStub::UnmapBufferCHROMIUM(GLuint /* target */) {
+  return 0;
+}
 void* GLES2InterfaceStub::MapBufferSubDataCHROMIUM(
     GLuint /* target */, GLintptr /* offset */, GLsizeiptr /* size */,
     GLenum /* access */) {
   return 0;
 }
 void GLES2InterfaceStub::UnmapBufferSubDataCHROMIUM(const void* /* mem */) {
 }
 void* GLES2InterfaceStub::MapTexSubImage2DCHROMIUM(
     GLenum /* target */, GLint /* level */, GLint /* xoffset */,
     GLint /* yoffset */, GLsizei /* width */, GLsizei /* height */,
@@ skipping 68 matching lines @@
 }
 void GLES2InterfaceStub::ReleaseTexImage2DCHROMIUM(
     GLenum /* target */, GLint /* imageId */) {
 }
 void GLES2InterfaceStub::TraceBeginCHROMIUM(const char* /* name */) {
 }
 void GLES2InterfaceStub::TraceEndCHROMIUM() {
 }
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_INTERFACE_STUB_IMPL_AUTOGEN_H_