Move error message makers off js builtins object.

src/js/harmony-spread.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function(global, utils) {
 
 'use strict';
 
 // -------------------------------------------------------------------
 // Imports
 var InternalArray = utils.InternalArray;
+var MakeTypeError;
+
+utils.Import(function(from) {
+  MakeTypeError = from.MakeTypeError;
+});
 
 // -------------------------------------------------------------------
 
 function SpreadArguments() {
   var count = %_ArgumentsLength();
   var args = new InternalArray();
 
   for (var i = 0; i < count; ++i) {
     var array = %_Arguments(i);
     var length = array.length;
@@ skipping 20 matching lines @@
 
 // ----------------------------------------------------------------------------
 // Exports
 
 %InstallToContext([
   "spread_arguments", SpreadArguments,
   "spread_iterable", SpreadIterable,
 ]);
 
 })