MD History: Remove bookmark when clicking bookmark star

chrome/test/data/webui/md_history/history_item_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_item_test', function() {
   function registerTests() {
     suite('history-item', function() {
       var element;
       var TEST_HISTORY_RESULTS;
       var SEARCH_HISTORY_RESULTS;
@@ skipping 58 matching lines @@
           // Checks that a new time gap separator has been inserted.
           assertTrue(items[2].hasTimeGap);
 
           element.removeDeletedHistory_([element.historyData_[3]]);
 
           // Checks time gap separator is removed.
           assertFalse(items[2].hasTimeGap);
         });
       });
 
+      test('remove bookmarks', function() {
+        element.addNewResults(TEST_HISTORY_RESULTS);
+        return flush().then(function() {
+          element.historyData_[1].starred = true;
+          element.historyData_[5].starred = true;
+
+          items = Polymer.dom(element.root).querySelectorAll('history-item');
+          MockInteractions.tap(items[1].$$('#bookmark-star'));
+
+          assertEquals(element.historyData_[1].starred, false);
+          assertEquals(element.historyData_[5].starred, false);
+          return flush();

[tsergeant, 2016/07/01 04:27:10]

Nit: You shouldn't need this line here.

return flush() is only needed if you're chaining another block after it.

[lshang, 2016/07/01 06:12:07]

Done.

+        });
+      });
+
       test('long titles are trimmed', function() {
         var item = document.createElement('history-item');
         var longtitle = '0123456789'.repeat(100);
         item.item =
             createHistoryEntry('2016-06-30', 'http://example.com/' + longtitle);
 
         var label = item.$$('history-searched-label');
         assertEquals(TITLE_MAX_LENGTH, label.title.length);
       });
 
       teardown(function() {
         element.historyData_ = [];
         element.searchedTerm = '';
       });
     });
   }
   return {
     registerTests: registerTests
   };
 });