MD History: Fix forward slash key not working in search field

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 83 matching lines @@
 
   onDeleteTap_: function() {
     this.fire('delete-selected');
   },
 
   showSearchField: function() {
     /** @type {!CrToolbarElement} */(this.$['main-toolbar'])
         .getSearchField()
         .showAndFocus();
   },
 

[Dan Beam, 2016/07/15 03:07:41]

nit: /** return {boolean} */

[lshang, 2016/07/15 05:02:09]

Since we need to check both the search field is showing and focused, I deleted
this method and check them directly in onCanExecute().

+  showingSearchField: function() {
+    return /** @type {!CrToolbarElement} */(this.$['main-toolbar'])
+        .getSearchField()
+        .showingSearchStatus();
+  },
+
   /**
    * If the user is a supervised user the delete button is not shown.
    * @private
    */
   deletingAllowed_: function() {
     return loadTimeData.getBoolean('allowDeletingHistory');
   },
 
   numberOfItemsSelected_: function(count) {
     return count > 0 ? loadTimeData.getStringF('itemsSelected', count) : '';
   },
 
   getHistoryInterval_: function(queryStartTime, queryEndTime) {
     // TODO(calamity): Fix the format of these dates.
     return loadTimeData.getStringF(
       'historyInterval', queryStartTime, queryEndTime);
   }
 });