[bindings] support legacyiterable<> WebIDL syntax

third_party/WebKit/Source/bindings/scripts/idl_definitions.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 268 matching lines @@
         self.attributes = []
         self.constants = []
         self.constructors = []
         self.custom_constructors = []
         self.extended_attributes = {}
         self.operations = []
         self.parent = None
         self.serializer = None
         self.stringifier = None
         self.iterable = None
+        self.legacyiterable = None
         self.maplike = None
         self.setlike = None
         self.original_interface = None
         self.partial_interfaces = []
         if not node:  # Early exit for IdlException.__init__
             return
 
         self.is_callback = bool(node.GetProperty('CALLBACK'))
         self.is_exception = False
         # FIXME: uppercase 'Partial' => 'PARTIAL' in base IDL parser
@@ skipping 20 matching lines @@
             elif child_class == 'Inherit':
                 self.parent = child.GetName()
             elif child_class == 'Serializer':
                 self.serializer = IdlSerializer(idl_name, child)
                 self.process_serializer()
             elif child_class == 'Stringifier':
                 self.stringifier = IdlStringifier(idl_name, child)
                 self.process_stringifier()
             elif child_class == 'Iterable':
                 self.iterable = IdlIterable(idl_name, child)
+            elif child_class == 'LegacyIterable':
+                self.legacyiterable = IdlIterable(idl_name, child)
             elif child_class == 'Maplike':
                 self.maplike = IdlMaplike(idl_name, child)
             elif child_class == 'Setlike':
                 self.setlike = IdlSetlike(idl_name, child)
             else:
                 raise ValueError('Unrecognized node class: %s' % child_class)
 
         if len(filter(None, [self.iterable, self.maplike, self.setlike])) > 1:
             raise ValueError('Interface can only have one of iterable<>, maplike<> and setlike<>.')
 
@@ skipping 749 matching lines @@
         self.visit_typed_object(argument)
 
     def visit_iterable(self, iterable):
         self.visit_typed_object(iterable)
 
     def visit_maplike(self, maplike):
         self.visit_typed_object(maplike)
 
     def visit_setlike(self, setlike):
         self.visit_typed_object(setlike)