checklicenses: remove libwebp from path whitelist

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 274 matching lines @@
     'third_party/libusb/src/msvc/config.h': [
         'UNKNOWN',
     ],
 
     'third_party/libvpx/source': [  # http://crbug.com/98319
         'UNKNOWN',
     ],
     'third_party/libvpx/source/libvpx/examples/includes': [
         'GPL (v2 or later)',
     ],
-    'third_party/libwebp': [  # http://crbug.com/98448
-        'UNKNOWN',
-    ],
     'third_party/libxml': [
         'UNKNOWN',
     ],
     'third_party/libxslt': [
         'UNKNOWN',
     ],
     'third_party/lzma_sdk': [
         'UNKNOWN',
     ],
     'third_party/mesa/MesaLib': [
@@ skipping 243 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())