Support for the NotificationOptions.actions, Notification.actions and Notification.maxActions attributes, which allow authors to show action buttons alongside a notification. These allow users to quickly handle the most common tasks for a particular notification, without having to open the originating website. As of Chrome 53, the `Notification.actions` property is exposed as well.
Docs: https://notifications.spec.whatwg.org/#using-actions https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/showNotification https://developer.mozilla.org/en-US/docs/Web/API/NotificationEvent/action
Samples: https://tests.peter.sh/notification-generator/#actions=3