Add an infrastructure to query history.google.com about other forms of browsing history.

components/browsing_data_ui/history_notice_utils.h

+// Copyright 2016 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 COMPONENTS_BROWSING_DATA_UI_HISTORY_NOTICE_UTILS_H_
+#define COMPONENTS_BROWSING_DATA_UI_HISTORY_NOTICE_UTILS_H_
+
+class ProfileSyncService;
+
+namespace history {
+class WebHistoryService;
+}
+
+namespace browsing_data_ui {
+
+// Whether the Clear Browsing Data UI should show a notice about the existence
+// of other forms of browsing history stored in user's account.
+bool ShouldShowNoticeAboutOtherFormsOfBrowsingHistory(
+    const ProfileSyncService* sync_service,
+    const history::WebHistoryService* history_service);
+
+}  // namespace browsing_data_ui
+
+#endif  // COMPONENTS_BROWSING_DATA_UI_HISTORY_NOTICE_UTILS_H_