Suppress cloning EventTarget methods in subtypes when using blink

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
 
@@ skipping 307 matching lines @@
             ELEM_TYPE=elem_type,
             NAME=getter_name,
             BODY = ('' if emitter == stream_getter_signatures_emitter else
                 ' => %s.%s(this)' % (((''
                 if emitter != element_stream_getters_emitter else 'Element.')
                   + provider), call_name)),
             TYPE=event_type)
 
   def _GetRawEvents(self, interface):
     all_interfaces = ([ interface ] +
-                      self._database.TransitiveSecondaryParents(interface))
+                      self._database.TransitiveSecondaryParents(interface,
+                                                                False))
     events = set([])
     for super_interface in all_interfaces:
       events = events.union(
         set([attr.id for attr in super_interface.attributes
              if (attr.type.id == 'EventHandler'
               or attr.type.id == 'EventListener')]))
     return events
 
   def _GetEvents(self, interface, custom_events):
     """ Gets a list of all of the events for the specified interface.
@@ skipping 70 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