refactor: move notifications from brightray to atom (#15209)

atom/browser/notifications/notification_delegate.h

@@ -0,0 +1,35 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_NOTIFICATIONS_NOTIFICATION_DELEGATE_H_
+#define ATOM_BROWSER_NOTIFICATIONS_NOTIFICATION_DELEGATE_H_
+
+#include <string>
+
+namespace atom {
+
+class NotificationDelegate {
+ public:
+  // The native Notification object is destroyed.
+  virtual void NotificationDestroyed() {}
+
+  // Failed to send the notification.
+  virtual void NotificationFailed() {}
+
+  // Notification was replied to
+  virtual void NotificationReplied(const std::string& reply) {}
+  virtual void NotificationAction(int index) {}
+
+  virtual void NotificationClick() {}
+  virtual void NotificationClosed() {}
+  virtual void NotificationDisplayed() {}
+
+ protected:
+  NotificationDelegate() = default;
+  ~NotificationDelegate() = default;
+};
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_NOTIFICATIONS_NOTIFICATION_DELEGATE_H_