Fix closing the Alert overlay

chrome/browser/ui/webui/options/certificate_manager_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.
 
 // Mac and Windows go to native certificate manager, and certificate manager
 // isn't implemented if OpenSSL is used.
 GEN('#if defined(USE_NSS)');
 
 /**
  * TestFixture for certificate manager WebUI testing.
@@ skipping 217 matching lines @@
 
   Mock4JS.verifyAllMocks();
 
   this.mockHandler.expects(once()).deleteCertificate(['c1']).will(callFunction(
       function() {
         CertificateManager.onPopulateTree(['personalCertsTab-tree', []]);
       }));
 
   // Click on the delete button.
   $('personalCertsTab-delete').click();
+
+  // Click on the cancel button to verify the confirmation overlay closes.
+  $('alertOverlayCancel').click();
+  expectTrue($('alertOverlay').parentNode.classList.contains('transparent'));
+
+  // Click on the delete button.
+  $('personalCertsTab-delete').click();
+
   // Click on the ok button in the confirmation overlay.
   $('alertOverlayOk').click();
+  expectTrue($('alertOverlay').parentNode.classList.contains('transparent'));
 
   // Context sensitive buttons should be disabled.
   expectTrue($('personalCertsTab-view').disabled);
   expectTrue($('personalCertsTab-backup').disabled);
   expectTrue($('personalCertsTab-delete').disabled);
   expectFalse($('personalCertsTab-import').disabled);
   if (this.isChromeOS)
     expectFalse($('personalCertsTab-import-and-bind').disabled);
   // Tree should be empty.
   expectTrue(personalCerts.querySelector('div.tree-item') === null);
@@ skipping 21 matching lines @@
   // edit and delete buttons should be disabled.
   var cert1 = certs[1];
   expectEquals('ca_cert1', cert1.data.name);
   expectNotEquals(null, cert1.querySelector('.cert-policy'));
   cert1.click();
   expectTrue($('caCertsTab-edit').disabled);
   expectTrue($('caCertsTab-delete').disabled);
 });
 
 GEN('#endif  // defined(USE_NSS)');