Enable mutation observers for IDL generation.

lib/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 os.path
 import logging.config
@@ skipping 74 matching lines @@
       'ENABLE_INPUT_SPEECH',
       'ENABLE_JAVASCRIPT_DEBUGGER',
       'ENABLE_JAVASCRIPT_I18N_API',
       'ENABLE_LINK_PREFETCH',
       'ENABLE_MEDIA_SOURCE',
       'ENABLE_MEDIA_STATISTICS',
       'ENABLE_MEDIA_STREAM',
       'ENABLE_METER_TAG',
       'ENABLE_MHTML',
       'ENABLE_MOUSE_LOCK_API',
+      'ENABLE_MUTATION_OBSERVERS',
       'ENABLE_NOTIFICATIONS',
       'ENABLE_PAGE_VISIBILITY_API',
       'ENABLE_PROGRESS_TAG',
       'ENABLE_QUOTA',
       'ENABLE_REGISTER_PROTOCOL_HANDLER',
       'ENABLE_REQUEST_ANIMATION_FRAME',
       'ENABLE_RUBY',
       'ENABLE_SANDBOX',
       'ENABLE_SCRIPTED_SPEECH',
       'ENABLE_SHADOW_DOM',
@@ skipping 85 matching lines @@
 
   builder.fix_displacements('WebKit')
 
   # Cleanup:
   builder.normalize_annotations(['WebKit', 'Dart'])
 
   db.Save()
 
 if __name__ == '__main__':
   sys.exit(main())