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

chrome/browser/resources/md_history/history_toolbar.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-toolbar',
   properties: {
     // Number of history items currently selected.
     count: {
       type: Number,
@@ skipping 18 matching lines @@
   /**
    * Changes the toolbar background color depending on whether any history items
    * are currently selected.
    * @private
    */
   changeToolbarView_: function() {
     this.itemsSelected_ = this.count != 0;
   },
 
   /**
+   * When using the drop-down "more from site" set the search bar to reflect the
+   * term that was searched.
+   */
+  setSearchTerm: function(search) {
+    this.searchTerm = search;
+    var searchBar = this.$$('#search-input');
+
+    searchBar.showAndFocus();
+    Polymer.dom.flush();

[calamity, 2016/02/03 05:09:13]

Do we need this flush?

[hsampson, 2016/02/08 00:39:37]

Yes otherwise we can't access the search input section of the search bar.

+    searchBar.$$('#search-input').value = search;
+  },
+
+  /**
    * If the search term has changed reload for the new search.
    */
   onSearchTermSearch: function(searchTerm) {
     if (searchTerm != this.searchTerm)
       this.fire('refresh-results', {search: searchTerm});
     this.searchTerm = searchTerm;
   },
 
   attached: function() {
     this.async(function() {
@@ skipping 15 matching lines @@
 function ToolbarSearchFieldDelegate(toolbar) {
   this.toolbar_ = toolbar;
 }
 
 ToolbarSearchFieldDelegate.prototype = {
   /** @override */
   onSearchTermSearch: function(searchTerm) {
     this.toolbar_.onSearchTermSearch(searchTerm);
   }
 };