Add a method to determine when to show a one-time history notice in the CBD dialog

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_
 
 #include "base/callback_forward.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. The response
 // is returned in a |callback|.
 void ShouldShowNoticeAboutOtherFormsOfBrowsingHistory(
     const ProfileSyncService* sync_service,
     history::WebHistoryService* history_service,
     base::Callback<void(bool)> callback);
 
+// Whether the Clear Browsing Data UI should popup a dialog with information
+// about the existence of other forms of browsing history stored in user's
+// account when the user deletes their browsing history for the first time.
+// The response is returned in a |callback|.
+void ShouldPopupDialogAboutOtherFormsOfBrowsingHistory(
+    const ProfileSyncService* sync_service,
+    history::WebHistoryService* history_service,
+    base::Callback<void(bool)> callback);
+
 }  // namespace browsing_data_ui
 
 #endif  // COMPONENTS_BROWSING_DATA_UI_HISTORY_NOTICE_UTILS_H_