[Blink-in-JS] Migrate the PrivateScript specific methods/attributes to ScriptController

Source/core/xml/DocumentXMLTreeViewer.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("Document", function(DocumentPrototype) {
+privateScriptController.installClass("Document", function(DocumentPrototype) {
     // FIXME: The stylesheet should be defined in a separate css file
     var styleSheet = [
         "div.header {",
         "    border-bottom: 2px solid black;",
         "    padding-bottom: 5px;",
         "    margin: 10px;",
         "}",
         "",
         "div.collapsible > div.hidden {",
         "    display:none;",
@@ skipping 439 matching lines @@
     {
        // To prevent selection on double click
        e.preventDefault();
     }
 
     DocumentPrototype.transformDocumentToTreeView = function(noStyleMessage) {
         prepareWebKitXMLViewer(noStyleMessage);
     }
 });