Enable profile switching for standalone App Launcher via the Settings App.

chrome/browser/resources/options/browser_options.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.
 
 cr.define('options', function() {
   var OptionsPage = options.OptionsPage;
   var ArrayDataModel = cr.ui.ArrayDataModel;
   var RepeatingButton = cr.ui.RepeatingButton;
 
   //
@@ skipping 162 matching lines @@
         options.browser_options.ProfileList.decorate(profilesList);
         profilesList.autoExpands = true;
 
         this.setProfilesInfo_(loadTimeData.getValue('profilesInfo'));
 
         profilesList.addEventListener('change',
             this.setProfileViewButtonsStatus_);
         $('profiles-create').onclick = function(event) {
           ManageProfileOverlay.showCreateDialog();
         };
+        if (OptionsPage.isSettingsApp()) {
+          $('profiles-app-list-switch').onclick = function(event) {
+            var selectedProfile = self.getSelectedProfileItem_();
+            chrome.send('switchAppListProfile', [selectedProfile.filePath]);
+          };
+        }
         $('profiles-manage').onclick = function(event) {
           ManageProfileOverlay.showManageDialog();
         };
         $('profiles-delete').onclick = function(event) {
           var selectedProfile = self.getSelectedProfileItem_();
           if (selectedProfile)
             ManageProfileOverlay.showDeleteDialog(selectedProfile);
         };
       }
 
@@ skipping 718 matching lines @@
       var selectedProfile = profilesList.selectedItem;
       var hasSelection = selectedProfile != null;
       var hasSingleProfile = profilesList.dataModel.length == 1;
       $('profiles-manage').disabled = !hasSelection ||
           !selectedProfile.isCurrentProfile;
       if (hasSelection && !selectedProfile.isCurrentProfile)
         $('profiles-manage').title = loadTimeData.getString('currentUserOnly');
       else
         $('profiles-manage').title = '';
       $('profiles-delete').disabled = !hasSelection && !hasSingleProfile;
+      if (OptionsPage.isSettingsApp()) {
+        $('profiles-app-list-switch').disabled = !hasSelection ||
+            selectedProfile.isCurrentProfile;
+      }
       var importData = $('import-data');
       if (importData) {
         importData.disabled = $('import-data').disabled = hasSelection &&
           !selectedProfile.isCurrentProfile;
       }
     },
 
     /**
      * Display the correct dialog layout, depending on how many profiles are
      * available.
      * @param {number} numProfiles The number of profiles to display.
      * @private
      */
     setProfileViewSingle_: function(numProfiles) {
       var hasSingleProfile = numProfiles == 1;
       $('profiles-list').hidden = hasSingleProfile;
       $('profiles-single-message').hidden = !hasSingleProfile;
       $('profiles-manage').hidden = hasSingleProfile;
       $('profiles-delete').textContent = hasSingleProfile ?
           loadTimeData.getString('profilesDeleteSingle') :
           loadTimeData.getString('profilesDelete');
+      if (OptionsPage.isSettingsApp())
+        $('profiles-app-list-switch').hidden = hasSingleProfile;
     },
 
     /**
      * Adds all |profiles| to the list.
      * @param {Array.<Object>} profiles An array of profile info objects.
      *     each object is of the form:
      *       profileInfo = {
      *         name: "Profile Name",
      *         iconURL: "chrome://path/to/icon/image",
      *         filePath: "/path/to/profile/data/on/disk",
@@ skipping 413 matching lines @@
     BrowserOptions.getLoggedInUsername = function() {
       return BrowserOptions.getInstance().username_;
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });