Long Tasks Notifications API

Hey all,
I'd like to solicit your feedback on the proposal for surfacing Long Task
notifications in PerformanceObserver.
See:
https://discourse.wicg.io/t/proposal-long-task-notifications-in-performance-observer/1613/1

We just collected some preliminary data
<https://discourse.wicg.io/t/proposal-long-task-notifications-in-performance-observer/1613/9>
on some popular sites and the results are looking very promising.
Comments here or on the WICG thread are very welcome.

Thanks,
--Shubhie
(Chrome Engineer)