Support dual licensing under MIT and the University of Illinois/NCSA

tools/checklicenses/checklicenses.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.
 
 """Makes sure that all files contain proper licensing information."""
 
 
 import optparse
 import os.path
@@ skipping 73 matching lines @@
     'Ms-PL',
     'Public domain',
     'Public domain BSD',
     'Public domain BSD (3 clause)',
     'Public domain BSD-like',
     'Public domain LGPL (v2.1 or later)',
     'libpng',
     'zlib/libpng',
     'SGI Free Software License B',
     'University of Illinois/NCSA Open Source License (BSD like)',
+
+    # Dual licenses.
+    ('dual license: MIT | '
+     'University of Illinois/NCSA Open Source License (BSD like)'),
 ]
 
 
 PATH_SPECIFIC_WHITELISTED_LICENSES = {
     'base/hash.cc': [  # http://crbug.com/98100
         'UNKNOWN',
     ],
     'base/third_party/icu': [  # http://crbug.com/98087
         'UNKNOWN',
     ],
@@ skipping 393 matching lines @@
   option_parser.add_option('--ignore-suppressions',
                            action='store_true',
                            default=False,
                            help='Ignore path-specific license whitelist.')
   options, args = option_parser.parse_args()
   return check_licenses(options, args)
 
 
 if '__main__' == __name__:
   sys.exit(main())