Refactor PrivateScriptRunner.js to reduce the number of globally exposed variables

Source/core/testing/PrivateScriptTest.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 "use strict";
 
-installClass("PrivateScriptTest", function(global, PrivateScriptTestPrototype) {
+installClass("PrivateScriptTest", function(PrivateScriptTestPrototype) {
 
     PrivateScriptTestPrototype.initialize = function() {
         this.m_shortAttribute = -1;
         this.m_stringAttribute = "xxx";
         this.m_nodeAttribute = null;
         this.m_stringAttributeForPrivateScriptOnly = "yyy";
     }
 
     PrivateScriptTestPrototype.doNothing = function() {
     }
@@ skipping 66 matching lines @@
         node.innerHTML = string;
     }
 
     PrivateScriptTestPrototype.addClickListener = function(node) {
         node.addEventListener("click", function () {
             node.innerHTML = "clicked";
         });
     }
 
     PrivateScriptTestPrototype.clickNode = function(document, node) {
-        var event = new MouseEvent("click", { bubbles: true, cancelable: true, view: global });
+        var event = new MouseEvent("click", { bubbles: true, cancelable: true, view: window });
         node.dispatchEvent(event);
     }
 
     Object.defineProperty(PrivateScriptTestPrototype, "readonlyShortAttribute", {
         get: function() { return 123; }
     });
 
     Object.defineProperty(PrivateScriptTestPrototype, "shortAttribute", {
         get: function() { return this.m_shortAttribute; },
         set: function(value) { this.m_shortAttribute = value; }
@@ skipping 54 matching lines @@
 
     PrivateScriptTestPrototype.addIntegerImplementedInCPP = function(value1, value2) {
         return this.addIntegerImplementedInCPPForPrivateScriptOnly(value1, value2);
     }
 
     Object.defineProperty(PrivateScriptTestPrototype, "stringAttributeImplementedInCPP", {
         get: function() { return this.m_stringAttributeImplementedInCPPForPrivateScriptOnly; },
         set: function(value) { this.m_stringAttributeImplementedInCPPForPrivateScriptOnly = value; }
     });
 });