Per feedback from Facebook at BlinkOn, we'd like to implement a shouldYield() method which returns a bool indicating to the frame whether it should pause its current task so that the browser can perform some high priority tasks (coming from user input). For now, this should be under a experimental flag, as it will be used by them to experiment potential benefits from having such a flag.
Comment 1 by npm@chromium.org
, Apr 24 2018