sync: Track validity of about:sync fields

chrome/browser/sync/about_sync_util.h

+// Copyright (c) 2012 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_ABOUT_SYNC_UTIL_H_
+#define CHROME_BROWSER_SYNC_ABOUT_SYNC_UTIL_H_
+
+#include "base/memory/scoped_ptr.h"
+
+class ProfileSyncService;
+
+namespace base {
+class DictionaryValue;
+}
+
+namespace sync_ui_util {
+// This function returns a DictionaryValue which contains all the information
+// required to populate the 'About' tab of about:sync.
+// Note that |service| may be NULL.
+scoped_ptr<base::DictionaryValue> ConstructAboutInformation(
+    ProfileSyncService* service);
+}
+
+#endif  // CHROME_BROWSER_SYNC_ABOUT_SYNC_UTIL_H_