Call JS functions via native context instead of js builtins object.

src/v8natives.js

 // Copyright 2012 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) {
 
 %CheckIsBootstrapping();
 
 // ----------------------------------------------------------------------------
 // Imports
@@ skipping 1791 matching lines @@
   to.ObjectFreeze = ObjectFreezeJS;
   to.ObjectGetOwnPropertyKeys = ObjectGetOwnPropertyKeys;
   to.ObjectHasOwnProperty = ObjectHasOwnProperty;
   to.ObjectIsFrozen = ObjectIsFrozen;
   to.ObjectIsSealed = ObjectIsSealed;
   to.ObjectToString = ObjectToString;
   to.OwnPropertyKeys = OwnPropertyKeys;
   to.ToNameArray = ToNameArray;
 });
 
-utils.ExportToRuntime(function(to) {
-  to["global_eval_fun"] = GlobalEval;
-  to["object_define_own_property"] = DefineOwnPropertyFromAPI;
-  to["object_get_own_property_descriptor"] = ObjectGetOwnPropertyDescriptor;
-  to["to_complete_property_descriptor"] = ToCompletePropertyDescriptor;
-});
+%InstallToContext([
+  "global_eval_fun", GlobalEval,
+  "object_define_own_property", DefineOwnPropertyFromAPI,
+  "object_get_own_property_descriptor", ObjectGetOwnPropertyDescriptor,
+  "to_complete_property_descriptor", ToCompletePropertyDescriptor,
+]);
 
 })