[MD History] Fix toolbar dates in grouped mode.

chrome/browser/ui/webui/browsing_history_handler.cc

 // Copyright 2015 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.
 
 #include "chrome/browser/ui/webui/browsing_history_handler.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/rtl.h"
 #include "base/i18n/time_formatting.h"
 #include "base/logging.h"
-#include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/default_clock.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/favicon/fallback_icon_service_factory.h"
 #include "chrome/browser/favicon/large_icon_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 488 matching lines @@
 
   // Add the specific dates that were searched to display them.
   // TODO(sergiu): Put today if the start is in the future.
   results_info.SetString(
       "queryStartTime",
       GetRelativeDateLocalized(clock_.get(), query_results_info->start_time));
   results_info.SetString(
       "queryEndTime",
       GetRelativeDateLocalized(clock_.get(), query_results_info->end_time));
 
+  results_info.SetString(
+      "queryStartMonth",
+      base::TimeFormatMonthAndYear(query_results_info->start_time));
+  results_info.SetString(
+      "queryInterval",
+      base::DateIntervalFormat(query_results_info->start_time,
+                               query_results_info->end_time,
+                               base::DATE_FORMAT_MONTH_WEEKDAY_DAY));
+
   web_ui()->CallJavascriptFunctionUnsafe("historyResult", results_info,
                                          results_value);
 }
 
 void BrowsingHistoryHandler::OnRemoveVisitsComplete() {
   web_ui()->CallJavascriptFunctionUnsafe("deleteComplete");
 }
 
 void BrowsingHistoryHandler::OnRemoveVisitsFailed() {
   web_ui()->CallJavascriptFunctionUnsafe("deleteFailed");
 }
 
 void BrowsingHistoryHandler::HistoryDeleted() {
   web_ui()->CallJavascriptFunctionUnsafe("historyDeleted");
 }
 
 void BrowsingHistoryHandler::HasOtherFormsOfBrowsingHistory(
     bool has_other_forms,
     bool has_synced_results) {
     web_ui()->CallJavascriptFunctionUnsafe(
         "showNotification", base::FundamentalValue(has_synced_results),
         base::FundamentalValue(has_other_forms));
 }