Screensharing that works for Linux Posted by katzebach on Monday September 30, 2013 @02:38PM from the same.io dept. http://www.same.io/i/926080 ( 1 comment | 3 points | on HN )
Which is sad, since the Mozilla and Chrome teams work closely on developing WebRTC and ensuring compatibility.
Edit: found some more info in the source of that page. This is their configuration guide:
1. Open the URL chrome://flags the latest version of Google Chrome.
2. Scroll to the bottom of the page and enable "Enable screen capture support in getUserMedia()
3. Restart browser - that's it
So, yes, WebRTC.