Hey there,
I would like to help you out with the chrome webrtc extension issue.
I have good experience in WebRTC APIs and I have developed a chrome extension for Screen sharing over webrtc myself.
(BlueJeans Network chrome extension on WebRTC)
so I am confident that I can fix whatever chrome extension issue you're running into with my skill set in this domain.
I hope to hear back from you and fix this issue.
regards,
Shamzi