MD Settings: Fix site data details regression and add test.

chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.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.
 
 /**
  * An example empty pref.
  * @type {SiteSettingsPref}
  */
 var prefsEmpty = {
   defaults: {
@@ skipping 30 matching lines @@
  * specifying mock responses.
  *
  * @constructor
  * @implements {settings.SiteSettingsPrefsBrowserProxy}
  * @extends {settings.TestBrowserProxy}
  */
 var TestSiteSettingsPrefsBrowserProxy = function() {
   settings.TestBrowserProxy.call(this, [
     'fetchUsbDevices',
     'fetchZoomLevels',
+    'getCookieDetails',
     'getDefaultValueForContentType',
     'getExceptionList',
     'observeProtocolHandlers',
     'observeProtocolHandlersEnabledState',
     'removeProtocolHandler',
     'removeUsbDevice',
     'removeZoomLevel',
     'resetCategoryPermissionForOrigin',
     'setCategoryPermissionForOrigin',
     'setDefaultValueForContentType',
     'setProtocolDefault'
   ]);
 
   /** @private {!SiteSettingsPref} */
   this.prefs_ = prefsEmpty;
 
   /** @private {!Array<ZoomLevelEntry>} */
   this.zoomList_ = [];
 
   /** @private {!Array<!UsbDeviceEntry>} */
   this.usbDevices_ = [];
 
   /** @private {!Array<!ProtocolEntry>} */
   this.protocolHandlers_ = [];
+
+  /** @private {?CookieList} */
+  this.cookieDetails_ = null;
 };
 
 TestSiteSettingsPrefsBrowserProxy.prototype = {
   __proto__: settings.TestBrowserProxy.prototype,
 
   /**
    * Sets the prefs to use when testing.
    * @param {!SiteSettingsPref} prefs The prefs to set.
    */
   setPrefs: function(prefs) {
@@ skipping 34 matching lines @@
     this.protocolHandlers_ = list.slice();
   },
 
   /** @override */
   setDefaultValueForContentType: function(contentType, defaultValue) {
     this.methodCalled(
         'setDefaultValueForContentType', [contentType, defaultValue]);
   },
 
   /** @override */
+  getCookieDetails: function(site) {
+    this.methodCalled('getCookieDetails', site);
+    return Promise.resolve(this.cookieDetails_  || {id: '', children: []});
+  },
+
+  /**
+   * @param {!CookieList} cookieList
+   */
+  setCookieDetails: function(cookieList) {
+    this.cookieDetails_ = cookieList;
+  },
+
+  /** @override */
   getDefaultValueForContentType: function(contentType) {
     this.methodCalled('getDefaultValueForContentType', contentType);
 
     var pref = undefined;
     if (contentType == settings.ContentSettingsTypes.AUTOMATIC_DOWNLOADS) {
       pref = this.prefs_.defaults.auto_downloads;
     } else if (contentType == settings.ContentSettingsTypes.BACKGROUND_SYNC) {
       pref = this.prefs_.background_sync;
     } else if (contentType == settings.ContentSettingsTypes.CAMERA) {
       pref = this.prefs_.defaults.camera;
@@ skipping 118 matching lines @@
   /** @override */
   setProtocolDefault: function() {
     this.methodCalled('setProtocolDefault', arguments);
   },
 
   /** @override */
   removeProtocolHandler: function() {
     this.methodCalled('removeProtocolHandler', arguments);
   }
 };