MD Settings: About page, allow error messages to contain HTML.

chrome/browser/resources/settings/about_page/about_page.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 'settings-about-page' contains version and OS related
  * information.
  */
 Polymer({
   is: 'settings-about-page',
@@ skipping 158 matching lines @@
         return this.i18n('aboutUpgradeUpToDate');
       case UpdateStatus.UPDATING:
 <if expr="chromeos">
         if (this.currentChannel_ != this.targetChannel_) {
           return this.i18n('aboutUpgradeUpdatingChannelSwitch',
               this.i18n(settings.browserChannelToI18nId(this.targetChannel_)));
         }
 </if>
         return this.i18n('aboutUpgradeUpdating');
       default:
-        return this.currentUpdateStatusEvent_.message || '';
+        var message = this.currentUpdateStatusEvent_.message;
+        return message ?
+            parseHtmlSubset('<b>' + message + '</b>').firstChild.innerHTML :
+            '';
     }
   },
 
   /**
    * @return {?string}
    * @private
    */
   getIcon_: function() {
     // If this platform has reached the end of the line, display an error icon
     // and ignore UpdateStatus.
@@ skipping 94 matching lines @@
   },
 </if>
 
 <if expr="_google_chrome">
   /** @private */
   onReportIssueTap_: function() {
     this.aboutBrowserProxy_.openFeedbackDialog();
   },
 </if>
 });