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

chrome/browser/resources/md_history/history_toolbar.js

Index: chrome/browser/resources/md_history/history_toolbar.js
diff --git a/chrome/browser/resources/md_history/history_toolbar.js b/chrome/browser/resources/md_history/history_toolbar.js
index d9e85ec15b600f13cc9f29b66a309fdf775c540a..8857b43e0c3da321b2d0283fc4cd1e81b0a084c0 100644
--- a/chrome/browser/resources/md_history/history_toolbar.js
+++ b/chrome/browser/resources/md_history/history_toolbar.js
@@ -102,6 +102,12 @@ Polymer({
         .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