[Command buffer] Enable primitive restart for WebGL 2

ui/gl/gl_bindings_autogen_mock.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
 // ui/gl/generate_bindings.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 727 matching lines @@
                                                     GLenum pname,
                                                     GLint value);
 static void GL_BINDING_CALL Mock_glPathStencilFuncNV(GLenum func,
                                                      GLint ref,
                                                      GLuint mask);
 static void GL_BINDING_CALL Mock_glPauseTransformFeedback(void);
 static void GL_BINDING_CALL Mock_glPixelStorei(GLenum pname, GLint param);
 static void GL_BINDING_CALL Mock_glPointParameteri(GLenum pname, GLint param);
 static void GL_BINDING_CALL Mock_glPolygonOffset(GLfloat factor, GLfloat units);
 static void GL_BINDING_CALL Mock_glPopGroupMarkerEXT(void);
+static void GL_BINDING_CALL Mock_glPrimitiveRestartIndex(GLuint index);
 static void GL_BINDING_CALL Mock_glProgramBinary(GLuint program,
                                                  GLenum binaryFormat,
                                                  const GLvoid* binary,
                                                  GLsizei length);
 static void GL_BINDING_CALL Mock_glProgramBinaryOES(GLuint program,
                                                     GLenum binaryFormat,
                                                     const GLvoid* binary,
                                                     GLsizei length);
 static void GL_BINDING_CALL Mock_glProgramParameteri(GLuint program,
                                                      GLenum pname,
@@ skipping 374 matching lines @@
                                                        GLboolean normalized,
                                                        GLsizei stride,
                                                        const void* ptr);
 static void GL_BINDING_CALL Mock_glViewport(GLint x,
                                             GLint y,
                                             GLsizei width,
                                             GLsizei height);
 static GLenum GL_BINDING_CALL Mock_glWaitSync(GLsync sync,
                                               GLbitfield flags,
                                               GLuint64 timeout);