[Command buffer] Enable primitive restart for WebGL 2

ui/gl/generate_bindings.py

 #!/usr/bin/env python
 # 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.
 
 """code generator for GL/GLES extension wrangler."""
 
 import optparse
 import os
 import collections
@@ skipping 862 matching lines @@
 { 'return_type': 'void',
   'names': ['glPointParameteri'],
   'arguments': 'GLenum pname, GLint param', },
 { 'return_type': 'void',
   'names': ['glPolygonOffset'],
   'arguments': 'GLfloat factor, GLfloat units', },
 { 'return_type': 'void',
   'names': ['glPopGroupMarkerEXT'],
   'arguments': 'void', },
 { 'return_type': 'void',
+  'names': ['glPrimitiveRestartIndex'],
+  'arguments': 'GLuint index', },
+{ 'return_type': 'void',
   'known_as': 'glProgramBinary',
   'versions': [{ 'name': 'glProgramBinaryOES' },
                { 'name': 'glProgramBinary',
                  'extensions': ['GL_ARB_get_program_binary'] }],
   'arguments': 'GLuint program, GLenum binaryFormat, '
                'const GLvoid* binary, GLsizei length' },
 { 'return_type': 'void',
   'versions': [{ 'name': 'glProgramParameteri',
                  'extensions': ['GL_ARB_get_program_binary'] }],
   'arguments': 'GLuint program, GLenum pname, GLint value' },
@@ skipping 1886 matching lines @@
                                     'gl_enums_implementation_autogen.h'),
                        'wb')
     GenerateEnumUtils(header_file, enum_header_filenames)
     header_file.close()
     ClangFormat(header_file.name)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))