NTP4: Fix crash when re-ordering apps.

chrome/browser/resources/ntp4/new_tab.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 New tab page
  * This is the main code for the new tab page used by touch-enabled Chrome
  * browsers.  For now this is still a prototype.
  */
 
@@ skipping 382 matching lines @@
 
   function enterRearrangeMode() {
     newTabView.enterRearrangeMode();
   }
 
   function getAppsCallback(data) {
     newTabView.getAppsCallback(data);
   }
 
   function getAppsPageIndex(page) {
-    newTabView.getAppsPageIndex(page);
+    return newTabView.getAppsPageIndex(page);
   }
 
   function getCardSlider() {
     return newTabView.cardSlider;
   }
 
   function leaveRearrangeMode(e) {
     newTabView.leaveRearrangeMode(e);
   }
 
@@ skipping 39 matching lines @@
 // TODO(estade): update the content handlers to use ntp namespace instead of
 // making these global.
 var getAppsCallback = ntp4.getAppsCallback;
 var appsPrefChangeCallback = ntp4.appsPrefChangeCallback;
 var themeChanged = ntp4.themeChanged;
 var recentlyClosedTabs = ntp4.setRecentlyClosedTabs;
 var setMostVisitedPages = ntp4.setMostVisitedPages;
 var updateLogin = ntp4.updateLogin;
 
 document.addEventListener('DOMContentLoaded', ntp4.onLoad);