Mark untrusted certificates as such in Linux UI.

chrome/browser/resources/options/certificate_tree.js

 // Copyright (c) 2010 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('options', function() {
   const Tree = cr.ui.Tree;
   const TreeItem = cr.ui.TreeItem;
 
   /**
    * Creates a new tree item for certificate data.
    * @param {Object=} data Data used to create a certificate tree item.
    * @constructor
    * @extends {TreeItem}
    */
   function CertificateTreeItem(data) {
     // TODO(mattm): other columns
     var treeItem = new TreeItem({
       label: data.name,
       data: data
     });
     treeItem.__proto__ = CertificateTreeItem.prototype;
 
     if (data.icon) {
       treeItem.icon = data.icon;
     }
 
+    if (data.untrusted) {
+      var badge = document.createElement('span');
+      badge.setAttribute('class', 'certUntrusted');
+      badge.textContent = localStrings.getString("badgeCertUntrusted");
+      treeItem.labelElement.insertBefore(
+          badge, treeItem.labelElement.firstChild);
+    }
+
     return treeItem;
   }
 
   CertificateTreeItem.prototype = {
     __proto__: TreeItem.prototype,
 
     /**
      * The tree path id/.
      * @type {string}
      */
@@ skipping 74 matching lines @@
 
       cr.dispatchSimpleEvent(this, 'change');
     },
   };
 
   return {
     CertificatesTree: CertificatesTree
   };
 });