Native context: do not put public symbols and flags on the js builtins object.

src/i18n.js

 // Copyright 2013 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.
 
 // ECMAScript 402 API implementation.
 
 /**
  * Intl object is a single object that has some named properties,
  * all of which are constructors.
  */
@@ skipping 10 matching lines @@
 var ArrayJoin;
 var ArrayPush;
 var IsFinite;
 var IsNaN;
 var GlobalBoolean = global.Boolean;
 var GlobalDate = global.Date;
 var GlobalNumber = global.Number;
 var GlobalRegExp = global.RegExp;
 var GlobalString = global.String;
 var MathFloor;
+var ObjectDefineProperties = utils.ImportNow("ObjectDefineProperties");
+var ObjectDefineProperty = utils.ImportNow("ObjectDefineProperty");
 var RegExpTest;
 var StringIndexOf;
 var StringLastIndexOf;
 var StringMatch;
 var StringReplace;
 var StringSplit;
 var StringSubstr;
 var StringSubstring;
 
 utils.Import(function(from) {
   ArrayIndexOf = from.ArrayIndexOf;
   ArrayJoin = from.ArrayJoin;
   ArrayPush = from.ArrayPush;
   IsFinite = from.IsFinite;
   IsNaN = from.IsNaN;
   MathFloor = from.MathFloor;
   RegExpTest = from.RegExpTest;
   StringIndexOf = from.StringIndexOf;
   StringLastIndexOf = from.StringLastIndexOf;
   StringMatch = from.StringMatch;
   StringReplace = from.StringReplace;
   StringSplit = from.StringSplit;
   StringSubstr = from.StringSubstr;
   StringSubstring = from.StringSubstring;
   ToNumber = from.ToNumber;
 });
 
-utils.ImportNow(function(from) {
-  ObjectDefineProperties = from.ObjectDefineProperties;
-  ObjectDefineProperty = from.ObjectDefineProperty;
-});
-
 // -------------------------------------------------------------------
 
 var Intl = {};
 
 %AddNamedProperty(global, "Intl", Intl, DONT_ENUM);
 
 /**
  * Caches available locales for each service.
  */
 var AVAILABLE_LOCALES = {
@@ skipping 2040 matching lines @@
     }
 
     var locales = %_Arguments(0);
     var options = %_Arguments(1);
     return toLocaleDateTime(
         this, locales, options, 'time', 'time', 'dateformattime');
   }
 );
 
 })