Fix closing the Alert overlay

chrome/browser/ui/webui/options/certificate_manager_browsertest.js

Index: chrome/browser/ui/webui/options/certificate_manager_browsertest.js
diff --git a/chrome/browser/ui/webui/options/certificate_manager_browsertest.js b/chrome/browser/ui/webui/options/certificate_manager_browsertest.js
index 9019c69b8563a4a74ec7d6b69c3efc8a9ee41083..060d27b7a1e7a25849676608b0101cb2be62fb3d 100644
--- a/chrome/browser/ui/webui/options/certificate_manager_browsertest.js
+++ b/chrome/browser/ui/webui/options/certificate_manager_browsertest.js
@@ -235,8 +235,17 @@ TEST_F('CertificateManagerWebUITest',
 
   // 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);