Incorporate comments in Dbus code and add Eol icon

chrome/browser/ui/webui/help/help_browsertest.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.
 
 /**
  * TestFixture for extension settings WebUI testing.
  * @extends {testing.Test}
  * @constructor
  */
 function HelpPageWebUITest() {}
@@ skipping 107 matching lines @@
   expectTrue(policyIcon.hidden);
 
   help.HelpPage.setUpdateStatus('disabled_by_admin', '');
   expectTrue(container.hidden);
   expectTrue(!update.hidden && update.disabled);
   expectFalse(policyIcon.hidden);
 });
 
 // Test that the EndofLife String is shown and hidden properly.
 TEST_F('HelpPageWebUITest', 'testUpdateEolMessage', function() {
-  var container = $('update-status-container');
+  var updateStatusContainer = $('update-status-container');
   var update = $('request-update');
-  var message = $('eol-message');
+  var eolStatusContainer = $('eol-status-container');
 
   help.HelpPage.updateEolMessage('device_supported', '');
-  expectTrue(message.hidden);
+  expectTrue(eolStatusContainer.hidden);
 
   help.HelpPage.updateEolMessage('device_endoflife', '');
-  expectFalse(message.hidden);
+  expectFalse(eolStatusContainer.hidden);
   expectTrue(update.disabled);
-  expectTrue(container.hidden);
+  expectTrue(updateStatusContainer.hidden);
 });
 
 GEN('#endif');