Convert app_launch_index and page_index from int to StringOrdinal.

chrome/browser/resources/ntp4/page_list_view.js

 // Copyright (c) 2011 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.
 
 /**
  * @fileoverview PageListView implementation.
  * PageListView manages page list, dot list, switcher buttons and handles apps
  * pages callbacks from backend.
  *
  * Note that you need to have AppLauncherHandler in your WebUI to use this code.
@@ skipping 261 matching lines @@
       var pageNames = data.appPageNames;
 
       function stringListIsEmpty(list) {
         for (var i = 0; i < list.length; i++) {
           if (list[i])
             return false;
         }
         return true;
       }
 
-      // Sort by launch index
+      // Sort by launch ordinal
       apps.sort(function(a, b) {
-        return a.app_launch_index - b.app_launch_index;
+        return a.app_launch_ordinal > b.app_launch_ordinal;
       });
 
       // An app to animate (in case it was just installed).
       var highlightApp;
 
       // Add the apps, creating pages as necessary
       for (var i = 0; i < apps.length; i++) {
         var app = apps[i];
         var pageIndex = app.page_index || 0;
         while (pageIndex >= this.appsPages.length) {
@@ skipping 292 matching lines @@
       this.cardSlider.selectCard(cardIndex, true);
 
       e.stopPropagation();
     }
   };
 
   return {
     PageListView: PageListView
   };
 });