Fixing error event type of Workers.

tools/dom/scripts/htmleventgenerator.py

 #!/usr/bin/python
 # Copyright (c) 2012, 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.
 
 """This module provides functionality to generate dart:html event classes."""
 
 import logging
 import monitored
 from generator import GetAnnotationsAndComments, FormatAnnotationsAndComments
@@ skipping 94 matching lines @@
   '*.touchstart': ('touchStart', 'TouchEvent'),
   '*.unload': ('unload', 'Event'),
   '*.volumechange': ('volumeChange', 'Event'),
   '*.waiting': ('waiting', 'Event'),
   '*.webkitAnimationEnd': ('animationEnd', 'AnimationEvent'),
   '*.webkitAnimationIteration': ('animationIteration', 'AnimationEvent'),
   '*.webkitAnimationStart': ('animationStart', 'AnimationEvent'),
   '*.webkitTransitionEnd': ('transitionEnd', 'TransitionEvent'),
   '*.webkitfullscreenchange': ('fullscreenChange', 'Event'),
   '*.webkitfullscreenerror': ('fullscreenError', 'Event'),
+  'AbstractWorker.error': ('error', 'ErrorEvent'),
   'AudioContext.complete': ('complete', 'Event'),
   'DOMApplicationCache.cached': ('cached', 'Event'),
   'DOMApplicationCache.checking': ('checking', 'Event'),
   'DOMApplicationCache.downloading': ('downloading', 'Event'),
   'DOMApplicationCache.noupdate': ('noUpdate', 'Event'),
   'DOMApplicationCache.obsolete': ('obsolete', 'Event'),
   'DOMApplicationCache.progress': ('progress', 'Event'),
   'DOMApplicationCache.updateready': ('updateReady', 'Event'),
   'Document.readystatechange': ('readyStateChange', 'Event'),
   'Document.selectionchange': ('selectionChange', 'Event'),
@@ skipping 223 matching lines @@
     """
     key = '%s.%s' % (html_interface_name, dom_event_name)
     if key in _html_event_types:
       return _html_event_types[key]
     key = '*.%s' % dom_event_name
     if key in _html_event_types:
       return _html_event_types[key]
     _logger.warn('Cannot resolve event type for %s.%s' %
         (html_interface_name, dom_event_name))
     return None