Pointing the webkitwidgets browser example to html5test.com, it scored 0/20 in the 'Peer to Peer' section which includes WebRTC. The webenginewidgets browser example has partial support (scored 15/20) but I don't know if it would work for what you want. I don't think there's going to be future Qt development with Webkit.

@coquetangler
Hi, this forum is community driven so it's probably something that none of the users here could answer. In any case, you can follow the progress of the fix on the bug report and gerrit patch (see last post on the bug)