Enable TexStorage on Desktop GL lower than 4.2

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 1067 matching lines @@
   'arguments': 'GLenum target, GLenum pname, const GLint* params', },
 { 'return_type': 'void',
   'known_as': 'glTexStorage2DEXT',
   'versions': [{ 'name': 'glTexStorage2D',
                  'extensions': ['GL_ARB_texture_storage'] },
                { 'name': 'glTexStorage2DEXT',
                  'extensions': ['GL_EXT_texture_storage'] }],
   'arguments': 'GLenum target, GLsizei levels, GLenum internalformat, '
                'GLsizei width, GLsizei height', },
 { 'return_type': 'void',
-  'versions': [{ 'name': 'glTexStorage3D' }],
+  'versions': [{ 'name': 'glTexStorage3D',
+                 'extensions': ['GL_ARB_texture_storage'] }],
   'arguments': 'GLenum target, GLsizei levels, GLenum internalformat, '
                'GLsizei width, GLsizei height, GLsizei depth', },
 { 'return_type': 'void',
   'names': ['glTexSubImage2D'],
   'arguments':
      'GLenum target, GLint level, GLint xoffset, GLint yoffset, '
      'GLsizei width, GLsizei height, GLenum format, GLenum type, '
      'const void* pixels', },
 { 'return_type': 'void',
   'versions': [{ 'name': 'glTexSubImage3D' }],
@@ skipping 1683 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:]))