Offers a way for the website to enable/disable the playback speed control exposed by the browser in native media controls.
With browser vendors adding playback speed control to their native media controls, developers want to control the visibility of this new control. Using the existing HTMLMediaElement.controlsList attribute, developers can enable/disable the visibility of the playback speed control with the new token “noplaybackrate”.
Samples: https://googlechrome.github.io/samples/media/controlslist-noplaybackrate.html
Explainers: https://github.com/wicg/controls-list/blob/master/explainer.md