Site Settings Desktop: Better support for chrome-extension scheme.

chrome/browser/resources/settings/site_settings/site_settings_behavior.js

 // Copyright 2015 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 Behavior common to Site Settings classes.
  */
 
 /** @polymerBehavior */
 var SiteSettingsBehaviorImpl = {
@@ skipping 363 matching lines @@
    * @return {string} The resulting pattern.
    * @private
    */
   addPatternWildcard: function(pattern) {
     if (pattern.indexOf('[*.]') > -1)
       return pattern;
     if (pattern.startsWith('http://'))
       return pattern.replace('http://', 'http://[*.]');
     else if (pattern.startsWith('https://'))
       return pattern.replace('https://', 'https://[*.]');
+    else if (pattern.startsWith('chrome-extension://'))
+      return pattern;  // No need for a wildcard for this.
     else
       return '[*.]' + pattern;
   },
 
   /**
    * Removes the wildcard prefix from a pattern string.
    * @param {string} pattern The pattern to remove the wildcard from.
    * @return {string} The resulting pattern.
    * @private
    */
@@ skipping 80 matching lines @@
 
   /**
    * Convert an exception (received from the C++ handler) to a full
    * SiteException.
    * @param {!Object} exception The raw site exception from C++.
    * @return {SiteException} The expanded (full) SiteException.
    * @private
    */
   expandSiteException: function(exception) {
     var origin = exception.origin;
-    var originForDisplay = this.sanitizePort(this.toUrl(origin).origin);
+    var url = this.toUrl(origin);
+    var originForDisplay = url ? this.sanitizePort(url.origin) : origin;
 
     var embeddingOrigin = exception.embeddingOrigin;
     var embeddingOriginForDisplay = '';
     if (origin != embeddingOrigin) {
       embeddingOriginForDisplay =
           this.getEmbedderString(embeddingOrigin, this.category);
     }
 
     return {
       origin: origin,
       originForDisplay: originForDisplay,
       embeddingOrigin: embeddingOrigin,
       embeddingOriginForDisplay: embeddingOriginForDisplay,
       incognito: exception.incognito,
       setting: exception.setting,
       source: exception.source,
     };
   },
 
 };
 
 /** @polymerBehavior */
 var SiteSettingsBehavior = [SiteSettingsBehaviorImpl];