Recreate notification manager on notification service owner change

Telegram/SourceFiles/platform/linux/linux_notification_service_watcher.h

@@ -0,0 +1,24 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include <QtDBus/QDBusServiceWatcher>
+
+namespace Platform {
+namespace internal {
+
+class NotificationServiceWatcher {
+public:
+	NotificationServiceWatcher();
+
+private:
+	QDBusServiceWatcher _dbusWatcher;
+};
+
+} // namespace internal
+} // namespace Platform