Re: [mediacapture-main] What constraint name should be exposed in case of a getUserMedia query with multiple failing constraints (#562)

> > It does not provide, on its own, sufficient information for widely used cases like getUserMedia({audio: true, video: true})
> 
> Hmm? That's an unconstrained case. It would never fail with _OverconstrainedError_.

I guess it should be a NotFoundError, which does not provide information on which one is missing.

Something like getUserMedia({video: {deviceId: {exact: 'non-existent'}}}) could be used to leak information that a given setup has no camera if this information is not already provided by enumerateDevices.


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