[MD History] Fix toolbar dates in grouped mode.

chrome/test/data/webui/md_history/test_util.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.
 
 /**
  * Replace the current primary element of the test with a new element. Useful
  * as an alternative to PolymerTest.clearBody() which preserves styling.
  * @param {Element} element
  */
 function replaceBody(element) {
@@ skipping 72 matching lines @@
 /**
  * Create a simple HistoryInfo.
  * @param {?string} searchTerm The search term that the info has. Will be empty
  *     string if not specified.
  * @return {!HistoryInfo}
  */
 function createHistoryInfo(searchTerm) {
   return {
     finished: true,
     hasSyncedResults: false,
-    queryEndTime: 'Monday',
-    queryStartTime: 'Tuesday',
+    queryInterval: 'Monday - Tuesday',
+    queryMonth: 'June',
     term: searchTerm || ''
   };
 }
 
 /**
  * @param {Element} element
  * @param {string} selector
  * @return {Element}
  */
 function polymerSelectAll(element, selector) {
@@ skipping 85 matching lines @@
   var tabs = tabUrls.map(function(tabUrl) {
     return {sessionId: 456, timestamp: 0, title: tabUrl, url: tabUrl};
   });
 
   return {
     tabs: tabs,
     sessionId: '123',
     userVisibleTimestamp: "A while ago"
   };
 }