Add glWaitSync 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 851 matching lines @@
                                              GLenum /* type */,
                                              GLboolean /* normalized */,
                                              GLsizei /* stride */,
                                              const void* /* ptr */) {
 }
 void GLES2InterfaceStub::Viewport(GLint /* x */,
                                   GLint /* y */,
                                   GLsizei /* width */,
                                   GLsizei /* height */) {
 }
+void GLES2InterfaceStub::WaitSync(GLsync /* sync */,
+                                  GLbitfield /* flags */,
+                                  GLuint64 /* timeout */) {
+}
 void GLES2InterfaceStub::BlitFramebufferCHROMIUM(GLint /* srcX0 */,
                                                  GLint /* srcY0 */,
                                                  GLint /* srcX1 */,
                                                  GLint /* srcY1 */,
                                                  GLint /* dstX0 */,
                                                  GLint /* dstY0 */,
                                                  GLint /* dstX1 */,
                                                  GLint /* dstY1 */,
                                                  GLbitfield /* mask */,
                                                  GLenum /* filter */) {
@@ skipping 308 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_