Wrap harmony implementations in functions.

src/harmony-reflect.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.
 
+(function() {
+
 'use strict';
 
-var $Reflect = global.Reflect;
+%CheckIsBootstrapping();
 
-function SetUpReflect() {
-  %CheckIsBootstrapping();
+var GlobalReflect = global.Reflect;
 
-  InstallFunctions($Reflect, DONT_ENUM, [
-    "apply", ReflectApply,
-    "construct", ReflectConstruct
-  ]);
-}
+InstallFunctions(GlobalReflect, DONT_ENUM, [
+  "apply", $reflectApply,
+  "construct", $reflectConstruct
+]);
 
-SetUpReflect();
+})();