Add CopyTexSubImage3D to GPU command buffer.

gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h

 // Copyright 2014 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
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 137 matching lines @@
 }
 void GLES2InterfaceStub::CopyTexSubImage2D(GLenum /* target */,
                                            GLint /* level */,
                                            GLint /* xoffset */,
                                            GLint /* yoffset */,
                                            GLint /* x */,
                                            GLint /* y */,
                                            GLsizei /* width */,
                                            GLsizei /* height */) {
 }
+void GLES2InterfaceStub::CopyTexSubImage3D(GLenum /* target */,
+                                           GLint /* level */,
+                                           GLint /* xoffset */,
+                                           GLint /* yoffset */,
+                                           GLint /* zoffset */,
+                                           GLint /* x */,
+                                           GLint /* y */,
+                                           GLsizei /* width */,
+                                           GLsizei /* height */) {
+}
 GLuint GLES2InterfaceStub::CreateProgram() {
   return 0;
 }
 GLuint GLES2InterfaceStub::CreateShader(GLenum /* type */) {
   return 0;
 }
 void GLES2InterfaceStub::CullFace(GLenum /* mode */) {
 }
 void GLES2InterfaceStub::DeleteBuffers(GLsizei /* n */,
                                        const GLuint* /* buffers */) {
@@ skipping 945 matching lines @@
 void GLES2InterfaceStub::SwapInterval(GLint /* interval */) {
 }
 void GLES2InterfaceStub::MatrixLoadfCHROMIUM(GLenum /* matrixMode */,
                                              const GLfloat* /* m */) {
 }
 void GLES2InterfaceStub::MatrixLoadIdentityCHROMIUM(GLenum /* matrixMode */) {
 }
 void GLES2InterfaceStub::BlendBarrierKHR() {
 }
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_INTERFACE_STUB_IMPL_AUTOGEN_H_