Re: [mediacapture-main] When is a MediaStream playing? (#615)

I updated the [fiddle](https://jsfiddle.net/pehrsons/5vg8zaf4/) to first add a video track that hadn't seen any frames yet (to have a track but not advance the media element's readyState). It shows Firefox 70 not adhering to "potentially playing" as it fires the first `timeupdate` after the frameless track is added. Chrome fires its first `timeupdate` after `canplaythrough` a la "potentially playing".

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Received on Thursday, 29 August 2019 12:48:25 UTC