[MD History] Fix toolbar dates in grouped mode.

chrome/browser/ui/webui/browsing_history_handler.cc

Index: chrome/browser/ui/webui/browsing_history_handler.cc
diff --git a/chrome/browser/ui/webui/browsing_history_handler.cc b/chrome/browser/ui/webui/browsing_history_handler.cc
index cd6fd97f57fa259f1fefdc0c1d5adc87ba40cdc1..577cbf3a6a3783800726c9697ac39f72e07e2873 100644
--- a/chrome/browser/ui/webui/browsing_history_handler.cc
+++ b/chrome/browser/ui/webui/browsing_history_handler.cc
@@ -524,6 +524,16 @@ void BrowsingHistoryHandler::OnQueryComplete(
       "queryEndTime",
       GetRelativeDateLocalized(clock_.get(), query_results_info->end_time));
 
+  results_info.SetString(
+      "queryStartMonth",
+      TimeFormatMonthAndYear(query_results_info->start_time));
+  results_info.SetString(
+      "queryStartTimeShort",
+      TimeFormatWeekdayMonthAndDay(query_results_info->start_time));
+  results_info.SetString(
+      "queryEndTimeShort",
+      TimeFormatWeekdayMonthAndDay(query_results_info->end_time));
+
   web_ui()->CallJavascriptFunctionUnsafe("historyResult", results_info,
                                          results_value);
 }