MD History: Implement search functionality.

chrome/test/data/webui/md_history/history_toolbar_test.js

 // Copyright 2016 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.
 
 cr.define('md_history.history_toolbar_test', function() {
   // Array of test history data.
   var TEST_HISTORY_RESULTS = [
     {
       "dateRelativeDay": "Today - Wednesday, December 9, 2015",
+      "title": "Google",
       "url": "https://www.google.com"
     }
   ];
 
   function registerTests() {
     suite('history-toolbar', function() {
       var element;
       var toolbar;
 
       suiteSetup(function() {
         element = $('history-list');
         toolbar = $('toolbar');
       });
 
       test('selecting checkbox causes toolbar to change', function(done) {
-        element.addNewResults(TEST_HISTORY_RESULTS);
+        element.addNewResults(TEST_HISTORY_RESULTS, '');
 
         flush(function() {
           var item = element.$$('history-item');
           MockInteractions.tap(item.$.checkbox);
 
           // Ensure that when an item is selected that the count held by the
           // toolbar increases.
           assertEquals(1, toolbar.count);
           // Ensure that the toolbar boolean states that at least one item is
           // selected.
           assertTrue(toolbar.itemsSelected_);
 
           MockInteractions.tap(item.$.checkbox);
 
           // Ensure that when an item is deselected the count held by the
           // toolbar decreases.
           assertEquals(0, toolbar.count);
           // Ensure that the toolbar boolean states that no items are selected.
           assertFalse(toolbar.itemsSelected_);
 
           done();
         });
       });
 
+      test('search term gathered correctly from toolbar', function(done) {
+        registerMessageCallback('queryHistory', this, function (info) {
+          assertEquals(info[0], 'Test');
+          done();
+        });
+
+        toolbar.onSearchTermSearch('Test');
+      });
+
       teardown(function() {
+        element.historyDataByDay_ = [];
         toolbar.count = 0;
       });
     });
   }
   return {
     registerTests: registerTests
   };
 });