Refactor the event-generation code to locate it in systemhtml.py.

client/dom/scripts/dartgenerator.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 generates Dart APIs from the IDL database."""
 
 import emitter
 import idlnode
 import logging
@@ skipping 378 matching lines @@
     for const in sorted(interface.constants, ConstantOutputOrder):
       for generator in generators:
         generator.AddConstant(const)
 
     attributes = [attr for attr in interface.attributes
                   if not self._IsEventAttribute(interface, attr)]
     for (getter, setter) in  _PairUpAttributes(attributes):
       for generator in generators:
         generator.AddAttribute(getter, setter)
 
-    events = set([attr for attr in interface.attributes
-                  if self._IsEventAttribute(interface, attr)])
-
-    if events:
-      for generator in generators:
-        generator.AddEventAttributes(events)
-
     # The implementation should define an indexer if the interface directly
     # extends List.
     element_type = MaybeListElementType(interface)
     if element_type:
       for generator in generators:
         generator.AddIndexer(element_type)
     # Group overloaded operations by id
     operationsById = {}
     for operation in interface.operations:
       if operation.id not in operationsById:
@@ skipping 251 matching lines @@
     pass
 
   def AddTypedArrayConstructors(self, element_type):
     pass
 
   def AddOperation(self, info):
     pass
 
   def AddEventAttributes(self, event_attrs):
     pass