[Extensions UI] Add tests for disabling/enabling/uninstalling extensions

chrome/browser/resources/extensions/extension_list.js

 // Copyright (c) 2012 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.
 
 <include src="extension_error.js">
 
 ///////////////////////////////////////////////////////////////////////////////
 // ExtensionFocusRow:
 
 /**
@@ skipping 200 matching lines @@
      * @param {boolean} enableAppInfoDialog Whether or not the app info dialog
      *     is enabled.
      * @return {Promise} A promise that is resolved once the extensions data is
      *     fully updated.
      */
     updateExtensionsData: function(incognitoAvailable, enableAppInfoDialog) {
       // If we start to need more information about the extension configuration,
       // consider passing in the full object from the ExtensionSettings.
       this.incognitoAvailable_ = incognitoAvailable;
       this.enableAppInfoDialog_ = enableAppInfoDialog;
-      return new Promise(function(resolve, reject) {
+      /** @private {Promise} */
+      this.extensionsUpdated_ = new Promise(function(resolve, reject) {
         chrome.developerPrivate.getExtensionsInfo(
             {includeDisabled: true, includeTerminated: true},
             function(extensions) {
           // Sort in order of unpacked vs. packed, followed by name, followed by
           // id.
           extensions.sort(function(a, b) {
             function compare(x, y) {
               return x < y ? -1 : (x > y ? 1 : 0);
             }
             function compareLocation(x, y) {
               return x.location == chrome.developerPrivate.Location.UNPACKED ?
                   -1 : (x.location == y.location ? 0 : 1);
             }
             return compareLocation(a, b) ||
                    compare(a.name.toLowerCase(), b.name.toLowerCase()) ||
                    compare(a.id, b.id);
           });
           this.extensions_ = extensions;
           this.showExtensionNodes_();
           resolve();
         }.bind(this));
       }.bind(this));
+      return this.extensionsUpdated_;
     },
 
     /** @return {number} The number of extensions being displayed. */
     getNumExtensions: function() {
       return this.extensions_.length;
     },
 
     getIdQueryParam_: function() {
       return parseQueryParams(document.location)['id'];
     },
@@ skipping 727 matching lines @@
       // TODO(dbeam): why do we need to focus <extensionoptions> before and
       // after its showing animation? Makes very little sense to me.
       overlay.setInitialFocus();
     },
   };
 
   return {
     ExtensionList: ExtensionList
   };
 });