clear method
Clears the specified notification.
|notificationId|: The id of the notification to be cleared. This is
returned by notifications.create
method.
|callback|: Called to indicate whether a matching notification existed.
The callback is required before Chrome 42.
Implementation
Future<bool> clear(String notificationId) async {
var $res = await promiseToFuture<bool>(
$js.chrome.notifications.clear(notificationId));
return $res;
}