Simplify Site Settings tests.

chrome/browser/resources/settings/site_settings/site_details_permission.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
  * 'site-details-permission' handles showing the state of one permission, such
  * as Geolocation, for a given origin.
  */
 Polymer({
@@ skipping 35 matching lines @@
    * @private
    */
   siteChanged_: function(site) {
     this.$.details.hidden = true;
 
     var prefsProxy = settings.SiteSettingsPrefsBrowserProxyImpl.getInstance();
     prefsProxy.getExceptionList(this.category).then(function(exceptionList) {
       for (var i = 0; i < exceptionList.length; ++i) {
         if (exceptionList[i].origin == site.origin) {
           // TODO(finnur): Convert to use attrForSelected.
-          this.$.permission.selected =
-              exceptionList[i].setting == 'allow' ? 0 : 1;
+          this.$.permission.selected = exceptionList[i].setting ==
+              settings.PermissionStringValues.ALLOW ? 0 : 1;
           this.$.details.hidden = false;
         }
       }
     }.bind(this));
   },
 
   /**
    * Called when a site within a category has been changed.
    * @param {number} category The category that changed.
    * @param {string} site The site that changed.
@@ skipping 27 matching lines @@
     // TODO(finnur): Compare with event.detail.item.dataset.permission directly
     //     once attrForSelected is in use.
     var action = event.detail.item.innerText;
     var value = (action == this.i18n_.allowAction) ?
         settings.PermissionValues.ALLOW :
         settings.PermissionValues.BLOCK;
     this.setCategoryPermissionForOrigin(
         this.site.origin, '', value, this.category);
   },
 });