Remove now unnecessary define.

tools/dom/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 35 matching lines @@
     'ENABLE_JAVASCRIPT_DEBUGGER',
     'ENABLE_JAVASCRIPT_I18N_API',
     'ENABLE_LEGACY_NOTIFICATIONS',
     'ENABLE_LINK_PREFETCH',
     'ENABLE_MEDIA_SOURCE',
     'ENABLE_MEDIA_STATISTICS',
     'ENABLE_MEDIA_STREAM',
     'ENABLE_METER_ELEMENT',
     'ENABLE_METER_TAG',
     'ENABLE_MHTML',
-    'ENABLE_MUTATION_OBSERVERS',

[podivilov, 2013/01/18 13:17:00]

Why are you removing this?

     'ENABLE_NOTIFICATIONS',
     'ENABLE_OVERFLOW_SCROLLING',
     'ENABLE_PAGE_POPUP',
     'ENABLE_PAGE_VISIBILITY_API',
     'ENABLE_POINTER_LOCK',
     'ENABLE_PROGRESS_ELEMENT',
     'ENABLE_PROGRESS_TAG',
     'ENABLE_QUOTA',
     'ENABLE_REGISTER_PROTOCOL_HANDLER',
     'ENABLE_REQUEST_ANIMATION_FRAME',
@@ skipping 132 matching lines @@
 
   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())