Initial state of cloned tracks

[eladalon1983]

The spec currently reads:

clone()
When a BrowserCaptureMediaStreamTrack is cloned, the user agent MUST produce a track which is initially uncropped, regardless of the crop-state of the original track.

Rethinking this, I don't see how that serve Web developers. The most natural thing to do when cloning is to clone as much of the state as possible - that's what a developer would expect.

If a developer wishes to hand off an uncropped version of the track, they can do the following:

const clonedTrack = track.clone();
await track.cropTo();
// Hand it off.

[youennf]

That seems reasonable. This would need a change in the way we do cloning, which will be made easier once we merge w3c/mediacapture-main#873.