Call builtin code wrapped in functions from the bootstrapper.

src/harmony-object.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.
 //
 
-(function() {
+(function(global, shared, exports) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 var GlobalObject = global.Object;
 
 // ES6, draft 04-03-15, section 19.1.2.1
 function ObjectAssign(target, sources) {
   var to = TO_OBJECT_INLINE(target);
@@ skipping 19 matching lines @@
     }
   }
   return to;
 }
 
 // Set up non-enumerable functions on the Object object.
 $installFunctions(GlobalObject, DONT_ENUM, [
   "assign", ObjectAssign
 ]);
 
-})();
+})