Add a testing switch to override the query for 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_
 
 #include "base/callback_forward.h"
 
 class ProfileSyncService;
 
 namespace history {
 class WebHistoryService;
 }
 
 namespace browsing_data_ui {
 
+namespace testing {
+
+// TODO(crbug.com/595332): A boolean flag indicating that
+// ShouldShowNoticeAboutOtherFormsOfBrowsingHistory() should skip the query
+// for other forms of browsing history and just assume some such forms were
+// found. Used only for testing. The default is false.
+extern bool g_override_other_forms_of_browsing_history_query;
+
+}
+
 // 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_