MD Settings: Certificate manager, hooking up all dialogs.

chrome/browser/resources/settings/certificate_manager_page/certificate_delete_confirmation_dialog.js

 // Copyright 2016 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.
 
 /**
  * @fileoverview A confirmation dialog allowing the user to delete various types
  * of certificates.
  */
 Polymer({
   is: 'settings-certificate-delete-confirmation-dialog',
@@ skipping 64 matching lines @@
     assertNotReached();
   },
 
   /** @private */
   onCancelTap_: function() {
     this.$.dialog.close();
   },
 
   /** @private */
   onOkTap_: function() {
-    this.browserProxy_.deleteCertificate(this.model.id).then(function() {
-      this.$.dialog.close();
-    }.bind(this),
-    /** @param {!CertificatesError} error */
-    function(error) {
-      // TODO(dpapad): Display error here.
-    });
+    this.browserProxy_.deleteCertificate(this.model.id).then(
+        function() {
+          this.$.dialog.close();
+        }.bind(this),
+        /** @param {!CertificatesError} error */
+        function(error) {
+          this.$.dialog.close();
+          this.fire('certificates-error', error);
+        }.bind(this));
   },
 });