Show modal dialog to tell users that the profile is managed when it's the case.

chrome/browser/resources/apps_debugger/js/items.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('apps_dev_tool', function() {
   'use strict';
 
   /**
    * AppsDevTool constructor.
    * @constructor
@@ skipping 78 matching lines @@
                                    'stopInterceptingEvents');
   };
 
   /**
    * Loads translated strings.
    */
   AppsDevTool.initStrings = function() {
     chrome.developerPrivate.getStrings(function(strings) {
       loadTimeData.data = strings;
       i18nTemplate.process(document, loadTimeData);
+
+      // Check managed profiles.
+      chrome.developerPrivate.isProfileManaged(function(isManaged) {
+        if (!isManaged)
+          return;
+        alertOverlay.setValues(
+            loadTimeData.getString('managedProfileDialogTitle'),
+            loadTimeData.getString('managedProfileDialogDescription'),
+            loadTimeData.getString('managedProfileDialogCloseButton'),
+            null,
+            function() {
+              AppsDevTool.showOverlay(null);
+              window.close();
+            },
+            null);
+        AppsDevTool.showOverlay($('alertOverlay'));
+      });
     });
   };
 
   return {
     AppsDevTool: AppsDevTool,
   };
 });