Install iterator meta objects via utils object.

test/mjsunit/regress/regress-403292.js

 // Copyright 2014 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.
 
 // Flags: --allow-natives-syntax --expose-natives-as=builtins --expose-gc
 
+var SetIterator = builtins.ImportNow("SetIterator");
+var MapIterator = builtins.ImportNow("MapIterator");
 var __v_7 = [];
 var __v_8 = {};
 var __v_10 = {};
 var __v_11 = this;
 var __v_12 = {};
 var __v_13 = {};
 var __v_14 = "";
 var __v_15 = {};
 try {
 __v_1 = {x:0};
 %OptimizeFunctionOnNextCall(__f_1);
 assertEquals("good", __f_1());
 delete __v_1.x;
 assertEquals("good", __f_1());
 } catch(e) { print("Caught: " + e); }
 try {
 __v_3 = new Set();
-__v_5 = new builtins.SetIterator(__v_3, -12);
+__v_5 = new SetIterator(__v_3, -12);
 __v_4 = new Map();
-__v_6 = new builtins.MapIterator(__v_4, 2);
+__v_6 = new MapIterator(__v_4, 2);
 __f_3(Array);
 } catch(e) { print("Caught: " + e); }
 function __f_4(__v_8, filter) {
   function __f_6(v) {
     for (var __v_4 in v) {
       for (var __v_4 in v) {}
     }
     %OptimizeFunctionOnNextCall(filter);
     return filter(v);
   }
   var __v_7 = eval(__v_8);
   gc();
   return __f_6(__v_7);
 }
 function __f_5(__v_6) {
   var __v_5 = new Array(__v_6);
   for (var __v_4 = 0; __v_4 < __v_6; __v_4++) __v_5.push('{}');
   return __v_5;
 }
 try {
 try {
   __v_8.test("\x80");
   assertUnreachable();
 } catch (e) {
 }
 gc();
 } catch(e) { print("Caught: " + e); }