[MD settings] get cookie details from site without transfering cookie tree

chrome/browser/resources/settings/site_settings/cookie_tree_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 A behavior for managing a tree of cookies.
  */
 
 /** @polymerBehavior */
 var CookieTreeBehaviorImpl = {
@@ skipping 65 matching lines @@
   },
 
   /**
    * Called when a single item has been removed (not during delete all).
    * @param {!CookieRemovePacket} args The details about what to remove.
    * @private
    */
   onTreeItemRemoved_: function(args) {
     this.rootCookieNode.removeByParentId(args.id, args.start, args.count);
     this.sites = this.rootCookieNode.getSummaryList();
-    this.fire('cookie-tree-changed');
   },
 
   /**
    * Deletes site data for multiple sites.
    * @return {Promise}
    */
   removeAllCookies: function() {
     return this.browserProxy.removeAllCookies().then(
         this.loadChildren_.bind(this));
   },
 };
 
 /** @polymerBehavior */
 var CookieTreeBehavior = [SiteSettingsBehavior, CookieTreeBehaviorImpl];