Fix bug where install animation would replay if something on the

chrome/browser/resources/ntp/apps.js

 // Copyright (c) 2010 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.
 
 function getAppsCallback(data) {
   logEvent('received apps');
   var appsSection = $('apps');
   var appsSectionContent = $('apps-maxiview');
   var appsMiniview = appsSection.getElementsByClassName('miniview')[0];
   appsSectionContent.textContent = '';
@@ skipping 147 matching lines @@
       a.style.backgroundImage = url(app['icon_big']);
       if (hashParams['app-id'] == app['id']) {
         div.setAttribute('new', 'new');
         // Delay changing the attribute a bit to let the page settle down a bit.
         setTimeout(function() {
           // This will trigger the 'bounce' animation defined in apps.css.
           div.setAttribute('new', 'installed');
         }, 500);
         div.addEventListener('webkitAnimationEnd', function(e) {
           div.removeAttribute('new');
+
+          // If we get new data (eg because something installs in another tab,
+          // or because we uninstall something here), don't run the install
+          // animation again.
+          document.documentElement.setAttribute("install-animation-enabled",
+                                                "false");
         });
         if ($('apps').classList.contains('hidden'))
           toggleSectionVisibilityAndAnimate('APPS');
       }
 
       var settingsButton = div.appendChild(new cr.ui.ContextMenuButton);
       settingsButton.className = 'app-settings';
       settingsButton.title = localStrings.getString('appsettings');
 
       addContextMenu(div, app);
@@ skipping 20 matching lines @@
 
     createWebStoreElement: function() {
       return createElement({
         'id': 'web-store-entry',
         'name': localStrings.getString('web_store_title'),
         'launch_url': localStrings.getString('web_store_url')
       });
     }
   };
 })();