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

src/collection.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.
 
 var $getHash;
 var $getExistingHash;
 
 (function(global, utils) {
 "use strict";
 
@@ skipping 484 matching lines @@
   var length = array.length;
   for (var i = 0; i < length; ++i) {
     %_CallFunction(set, array[i], SetAdd);
   }
   return set;
 };
 
 // -----------------------------------------------------------------------
 // Exports
 
-utils.ExportToRuntime(function(to) {
-  to["map_get"] = MapGet;
-  to["map_set"] = MapSet;
-  to["map_has"] = MapHas;
-  to["map_delete"] = MapDelete;
-  to["set_add"] = SetAdd;
-  to["set_has"] = SetHas;
-  to["set_delete"] = SetDelete;
-  to["map_from_array"] = MapFromArray;
-  to["set_from_array"]= SetFromArray;
-});
+%InstallToContext([
+  "map_get", MapGet,
+  "map_set", MapSet,
+  "map_has", MapHas,
+  "map_delete", MapDelete,
+  "set_add", SetAdd,
+  "set_has", SetHas,
+  "set_delete", SetDelete,
+  "map_from_array", MapFromArray,
+  "set_from_array",SetFromArray,
+]);
 
 })