Add glTransformFeedbackVaryings 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 573 matching lines @@
                                        GLint /* xoffset */,
                                        GLint /* yoffset */,
                                        GLint /* zoffset */,
                                        GLsizei /* width */,
                                        GLsizei /* height */,
                                        GLsizei /* depth */,
                                        GLenum /* format */,
                                        GLenum /* type */,
                                        const void* /* pixels */) {
 }
+void GLES2InterfaceStub::TransformFeedbackVaryings(
+    GLuint /* program */,
+    GLsizei /* count */,
+    const char* const* /* varyings */,
+    GLenum /* buffermode */) {
+}
 void GLES2InterfaceStub::Uniform1f(GLint /* location */, GLfloat /* x */) {
 }
 void GLES2InterfaceStub::Uniform1fv(GLint /* location */,
                                     GLsizei /* count */,
                                     const GLfloat* /* v */) {
 }
 void GLES2InterfaceStub::Uniform1i(GLint /* location */, GLint /* x */) {
 }
 void GLES2InterfaceStub::Uniform1iv(GLint /* location */,
                                     GLsizei /* count */,
@@ skipping 505 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_