Add KeyCode enumeration in Dart.

sdk/lib/html/scripts/fremontcutbuilder.py

 #!/usr/bin/python
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import database
 import databasebuilder
 import idlparser
 import logging.config
 import os.path
@@ skipping 167 matching lines @@
     'workers',
     'xml',
     ]
 
   ignored_idls = [
     'AbstractView.idl',
     ]
 
   idl_files = []
 
-  webcore_dir = os.path.join(current_dir, '..', '..', '..',
+  webcore_dir = os.path.join(current_dir, '..', '..', '..', '..',
                              'third_party', 'WebCore')
   if not os.path.exists(webcore_dir):
     raise RuntimeError('directory not found: %s' % webcore_dir)
 
   def visitor(arg, dir_name, names):
     for name in names:
       file_name = os.path.join(dir_name, name)
       (interface, ext) = os.path.splitext(file_name)
       if ext == '.idl' and name not in ignored_idls:
         idl_files.append(file_name)
 
   for dir_name in webkit_dirs:
     dir_path = os.path.join(webcore_dir, dir_name)
     os.path.walk(dir_path, visitor, None)
 
   database_dir = os.path.join(current_dir, '..', 'database')
   return build_database(idl_files, database_dir, parallel=parallel)
 
 if __name__ == '__main__':
   sys.exit(main())