Support for the Notification.vibrate attribute, which allows authors to supply a vibration pattern similar to "navigator.vibrate()", which is to be applied when a Notification gets shown
By supporting Notification.vibrate, developers can control vibrate pattern, when a Notification gets shown such as native notification.
And developers can support a variety of vibration patterns to the user through this attribute.
Low. we are the first browser to implement and ship this feature.
Ongoing technical constraints
Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Vibration is dependent on device capability.
This feature will be supported only android, for now.
OWP launch tracking bug?
Link to entry on the feature dashboard
Requesting approval to ship?