Integration with screen share and media capture

[kenchris]

To avoid cross origin user tracking, many specs restrict features to active focuses documents (example Generic Sensors).

But for compute pressure, one of the core use-cases is actually to know the CPU pressure while screen sharing to make sure the screen sharing is smooth, and the video streams and effects do not negatively affect the screen sharing. But during screen sharing, it is quite common that the web site/app using compute pressure is not actually focused.

This will require hooks in other specs and we probably need something like a initiator-of-still-active-screensharing-session

@eladalon1983 @riju @fideltian

[kenchris]

Hi @eladalon1983 - it would be great if you could spec something like this. I am not familiar enough with the spec's to understand all of the corner cases.

I did a PR for Picture-in-Picture that might serve as inspiration: w3c/picture-in-picture#210

[kenchris]

Tracking in w3c/mediacapture-main#887