IDL compiler: sync Python to r166999

Source/bindings/scripts/unstable/v8_methods.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 79 matching lines @@
                 ['DoNotCheckSecurity', 'DoNotCheckSignature', 'NotEnumerable',
                  'ReadOnly', 'RuntimeEnabled', 'Unforgeable'])),
         'function_template': function_template(),
         'idl_type': idl_type,
         'has_exception_state':
             is_raises_exception or
             is_check_security_for_frame or
             any(argument for argument in arguments
                 if argument.idl_type == 'SerializedScriptValue' or
                    v8_types.is_integer_type(argument.idl_type)) or
-            name in ['addEventListener', 'removeEventListener'],
+            name in ['addEventListener', 'removeEventListener', 'dispatchEvent'],
         'is_call_with_execution_context': has_extended_attribute_value(method, 'CallWith', 'ExecutionContext'),
         'is_call_with_script_arguments': is_call_with_script_arguments,
         'is_call_with_script_state': is_call_with_script_state,
         'is_check_security_for_frame': is_check_security_for_frame,
         'is_check_security_for_node': is_check_security_for_node,
         'is_custom': 'Custom' in extended_attributes,
         'is_custom_element_callbacks': is_custom_element_callbacks,
         'is_do_not_check_security': 'DoNotCheckSecurity' in extended_attributes,
         'is_do_not_check_signature': 'DoNotCheckSignature' in extended_attributes,
         'is_per_world_bindings': 'PerWorldBindings' in extended_attributes,
@@ skipping 139 matching lines @@
     return property_attributes_list
 
 
 def union_arguments(idl_type):
     """Return list of ['result0Enabled', 'result0', 'result1Enabled', ...] for union types, for use in setting return value"""
     if not v8_types.is_union_type(idl_type):
         return None
     return [arg
             for i in range(len(idl_type.union_member_types))
             for arg in ['result%sEnabled' % i, 'result%s' % i]]