IDL compiler: Remove creationContext from v8SetReturnValue* in Python CG

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 63 matching lines @@
 
 def cpp_method(method, number_of_arguments):
     argument_names = [argument.name for argument in method.arguments]
     # Truncate omitted optional arguments
     argument_names = argument_names[:number_of_arguments]
     cpp_value = 'imp->%s(%s)' % (method.name, ', '.join(argument_names))
 
     idl_type = method.idl_type
     if idl_type == 'void':
         return cpp_value
-    return v8_types.v8_set_return_value(idl_type, cpp_value, callback_info='args', creation_context='args.Holder()', isolate='args.GetIsolate()')
+    return v8_types.v8_set_return_value(idl_type, cpp_value, callback_info='args', isolate='args.GetIsolate()')
 
 
 def custom_signature(arguments):
     def argument_template(argument):
         idl_type = argument.idl_type
         if v8_types.is_wrapper_type(idl_type):
             return 'V8PerIsolateData::from(isolate)->rawTemplate(&V8{idl_type}::wrapperTypeInfo, currentWorldType)'.format(idl_type=idl_type)
         return 'v8::Handle<v8::FunctionTemplate>()'
 
     if (any(argument.is_optional for argument in arguments) or
         all(not v8_types.is_wrapper_type(argument.idl_type)
             for argument in arguments)):
         return None
     return ', '.join([argument_template(argument) for argument in arguments])
 
 
 def v8_value_to_local_cpp_value(argument, index):
     idl_type = argument.idl_type
     name = argument.name
     if argument.is_variadic:
         return 'V8TRYCATCH_VOID(Vector<{cpp_type}>, {name}, toNativeArguments<{cpp_type}>(args, {index}))'.format(
                 cpp_type=v8_types.cpp_type(idl_type), name=name, index=index)
     return v8_types.v8_value_to_local_cpp_value(
         idl_type, argument.extended_attributes,
         'args[%s]' % index, name, 'args.GetIsolate()')