[MD History] Fix toolbar dates in grouped mode.

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

Index: chrome/test/data/webui/md_history/history_grouped_list_test.js
diff --git a/chrome/test/data/webui/md_history/history_grouped_list_test.js b/chrome/test/data/webui/md_history/history_grouped_list_test.js
index 35e69e428090908fbbdc92342b5dc5a1c70cdef7..5f4b0eb25b1701cf7f34009ac24985bba298d4e3 100644
--- a/chrome/test/data/webui/md_history/history_grouped_list_test.js
+++ b/chrome/test/data/webui/md_history/history_grouped_list_test.js
@@ -80,8 +80,6 @@ cr.define('md_history.history_grouped_list_test', function() {
       test('items grouped by domain', function() {
         app.set('queryState_.range', HistoryRange.WEEK);
         var info = createHistoryInfo();
-        info.queryStartTime = 'Yesterday';
-        info.queryEndTime = 'Now';
         app.historyResult(info, SIMPLE_RESULTS);
         return PolymerTest.flushTasks().then(function() {
           var data = groupedList.groupedHistoryData_;
@@ -93,13 +91,29 @@ cr.define('md_history.history_grouped_list_test', function() {
           assertEquals(2, data[0].domains[0].visits.length);
           assertEquals(1, data[0].domains[1].visits.length);
           assertEquals(1, data[0].domains[2].visits.length);
-
-          // Ensure the toolbar displays the correct begin and end time.
-          assertEquals('Yesterday', toolbar.queryStartTime);
-          assertEquals('Now', toolbar.queryEndTime);
         });
       });
 
+      test('toolbar dates appear in grouped mode', function() {
+        var getInfo = function() {
+          var info = createHistoryInfo();
+          info.queryStartMonth = 'Dec 2016';
+          info.queryStartTimeShort = 'Yesterday';
+          info.queryEndTimeShort = 'Now';
+          return info;
+        };
+        app.set('queryState_.range', HistoryRange.MONTH);
+        app.historyResult(getInfo(), SIMPLE_RESULTS);
+        assertEquals(
+            'Dec 2016', toolbar.$$('#grouped-date').textContent.trim());
+
+        app.set('queryState_.range', HistoryRange.WEEK);
+        app.historyResult(getInfo(), SIMPLE_RESULTS);
+        assertEquals(
+            loadTimeData.getStringF('historyInterval', 'Yesterday', 'Now'),
+            toolbar.$$('#grouped-date').textContent.trim());
+      });
+
       test('items grouped by day in week view', function() {
         app.set('queryState_.range', HistoryRange.WEEK);
         app.historyResult(createHistoryInfo(), PER_DAY_RESULTS);