MD History: Drop-down menu allows searching for history-items by domain name.

chrome/browser/resources/md_history/history_item.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.
 
 Polymer({
   is: 'history-item',
 
   properties: {
     timeAccessed_: {
       type: String,
@@ skipping 75 matching lines @@
   /**
    * Fires a custom event when the menu button is clicked. Sends the details of
    * the history item and where the menu should appear.
    */
   onMenuButtonTap_: function(e) {
     var position = this.$['menu-button'].getBoundingClientRect();
 
     this.fire('toggle-menu', {
       x: position.left,
       y: position.top,
-      accessTime: this.timestamp_
+      itemIdentifier: {
+        url: this.websiteUrl_,
+        timestamps: this.timestamp_,
+        domain: this.websiteDomain_
+      }
     });
 
     // Stops the 'tap' event from closing the menu when it opens.
     e.stopPropagation();
   },
 
   /**
    * If the results shown are search results set the search term to be bold
    * where it is displayed in the history-item title.
    * @private
@@ skipping 26 matching lines @@
    * Quote a string so it can be used in a regular expression.
    * @param {string} str The source string.
    * @return {string} The escaped string.
    * @private
    */
   quoteString_: function(searchTerm) {
     return searchTerm.replace(/([\\\.\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:])/g,
         '\\$1');
   }
 });