[Sync] Port about:sync to DOMUI

chrome/browser/sync/sync_ui_util.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_SYNC_SYNC_UI_UTIL_H_
 #define CHROME_BROWSER_SYNC_SYNC_UI_UTIL_H_
 #pragma once
 
 #include <string>
 
@@ skipping 38 matching lines @@
 
 // Open the appropriate sync dialog for the given profile (which can be
 // incognito).  |code| should be one of the START_FROM_* codes.
 void OpenSyncMyBookmarksDialog(
     Profile* profile, ProfileSyncService::SyncEventCodes code);
 
 void AddBoolSyncDetail(ListValue* details,
                        const std::string& stat_name,
                        bool stat_value);
 
+// |service| can be NULL.
 void ConstructAboutInformation(ProfileSyncService* service,
                                DictionaryValue* strings);
 
 void AddIntSyncDetail(ListValue* details,
                       const std::string& stat_name,
                       int64 stat_value);
 }  // namespace sync_ui_util
 #endif  // CHROME_BROWSER_SYNC_SYNC_UI_UTIL_H_