[lxgr]

> just block [WebRTC] entirely

I think an opt-in permission seems like the way to go, like the one we already have for microphone/camera permissions, and possibly just merged with these (i.e. grant WebRTC permissions together with A/V permissions).

There are quite a few interesting non-A/V WebRTC applications around – these could be handled via an explicit prompt, similarly to how newer iOS versions handle local network permissions.