Make Date.prototype an ordinary object

src/date.js

 // Copyright 2006-2008 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.
 
 var $createDate;
 
 // -------------------------------------------------------------------
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
 var GlobalDate = global.Date;
+var GlobalObject = global.Object;
 var InternalArray = utils.InternalArray;
 var IsFinite;
 var MathAbs;
 var MathFloor;
 var ToNumber;
 var ToString;
 
 utils.Import(function(from) {
   IsFinite = from.IsFinite;
   MathAbs = from.MathAbs;
@@ skipping 784 matching lines @@
 
 function CreateDate(time) {
   var date = new GlobalDate();
   date.setTime(time);
   return date;
 }
 
 // -------------------------------------------------------------------
 
 %SetCode(GlobalDate, DateConstructor);
-%FunctionSetPrototype(GlobalDate, new GlobalDate(NAN));
+%FunctionSetPrototype(GlobalDate, new GlobalObject());
 
 // Set up non-enumerable properties of the Date object itself.
 utils.InstallFunctions(GlobalDate, DONT_ENUM, [
   "UTC", DateUTC,
   "parse", DateParse,
   "now", DateNow
 ]);
 
 // Set up non-enumerable constructor property of the Date prototype object.
 %AddNamedProperty(GlobalDate.prototype, "constructor", GlobalDate, DONT_ENUM);
@@ skipping 45 matching lines @@
   "toUTCString", DateToUTCString,
   "getYear", DateGetYear,
   "setYear", DateSetYear,
   "toISOString", DateToISOString,
   "toJSON", DateToJSON
 ]);
 
 %InstallToContext(["create_date_fun", CreateDate]);
 
 })