Fix Closure errors.

chrome/browser/resources/settings/site_settings/site_list.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
  * 'settings-site-list' shows a list of Allowed and Blocked sites for a given
  * category.
  */
 Polymer({
@@ skipping 252 matching lines @@
       }
 
       sites.push(exceptionList[i]);
     }
     return sites;
   },
 
   /**
    * Converts a string origin/pattern to a URL.
    * @param {string} originOrPattern The origin/pattern to convert to URL.
-   * @return {!URL} The URL to return (or null if origin is not a valid URL).
+   * @return {URL} The URL to return (or null if origin is not a valid URL).
    * @private
    */
   toUrl_: function(originOrPattern) {
     if (originOrPattern.length == 0)
       return null;
     // TODO(finnur): Hmm, it would probably be better to ensure scheme on the
     //     JS/C++ boundary.
     return new URL(
         this.ensureUrlHasScheme(originOrPattern.replace('[*.]', '')));
   },
 
   /**
    * Converts an unordered site list to an ordered array, sorted by site name
    * then protocol and de-duped (by origin).
    * @param {!Array<SiteException>} sites A list of sites to sort and de-dup.
+   * @return {!Array<SiteException>} Sorted and de-duped list.
    * @private
    */
   toSiteArray_: function(sites) {
     var self = this;
     sites.sort(function(a, b) {
       var url1 = self.toUrl_(a.origin);
       var url2 = self.toUrl_(b.origin);
       var comparison = url1.host.localeCompare(url2.host);
       if (comparison == 0) {
         comparison = url1.protocol.localeCompare(url2.protocol);
@@ skipping 148 matching lines @@
    * Returns the icon to use for a given site.
    * @param {string} url The url of the site to fetch the icon for.
    * @private
    */
   computeSiteIcon_: function(url) {
     // TODO(finnur): For now, we're returning a placeholder image for each site
     // but the actual favicon for each site will need to be returned.
     return 'communication:message';
   },
 });