Do not treat callbacks with no handlers as interfaces.

lib/dom/scripts/generator.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 shared functionality for systems to generate
 Dart APIs from the IDL database."""
 
 import copy
 import re
@@ skipping 288 matching lines @@
   info.overloads = None
   info.idl_args = idl_args
   info.declared_name = name
   info.name = name
   info.constructor_name = None
   info.js_name = name
   info.type_name = interface.id
   info.param_infos = args
   return info
 
-
-def RecognizeCallback(interface):
-  """Returns the info for the callback method if the interface smells like a
-  callback.
-  """
-  if 'Callback' not in interface.ext_attrs: return None
-  handlers = [op for op in interface.operations if op.id == 'handleEvent']
-  if not handlers: return None
-  if not (handlers == interface.operations): return None
-  return AnalyzeOperation(interface, handlers)
-
 def IsDartListType(type):
   return type == 'List' or type.startswith('sequence<')
 
 def IsDartCollectionType(type):
   return IsDartListType(type)
 
 def FindMatchingAttribute(interface, attr1):
   matches = [attr2 for attr2 in interface.attributes
              if attr1.id == attr2.id]
   if matches:
@@ skipping 505 matching lines @@
     match = re.match(r'(?:sequence<(\w+)>|(\w+)\[\])$', type_name)
     if match:
       if type_name == 'DOMString[]':
         return DOMStringArrayTypeInfo(self.TypeInfo('DOMString'))
       return SequenceIDLTypeInfo(type_name, self.TypeInfo(match.group(1) or match.group(2)))
     if not type_name in _idl_type_registry:
       return InterfaceIDLTypeInfo(type_name, TypeData('Interface'))
     type_data = _idl_type_registry.get(type_name)
     class_name = '%sIDLTypeInfo' % type_data.clazz
     return globals()[class_name](type_name, type_data)