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

atom/browser/notifications/mac/notification_center_delegate.h

@@ -0,0 +1,22 @@
+// 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_MAC_NOTIFICATION_CENTER_DELEGATE_H_
+#define ATOM_BROWSER_NOTIFICATIONS_MAC_NOTIFICATION_CENTER_DELEGATE_H_
+
+#import <Foundation/Foundation.h>
+
+namespace atom {
+class NotificationPresenterMac;
+}
+
+@interface NotificationCenterDelegate
+    : NSObject <NSUserNotificationCenterDelegate> {
+ @private
+  atom::NotificationPresenterMac* presenter_;
+}
+- (instancetype)initWithPresenter:(atom::NotificationPresenterMac*)presenter;
+@end
+
+#endif  // ATOM_BROWSER_NOTIFICATIONS_MAC_NOTIFICATION_CENTER_DELEGATE_H_