[webrtc-pc] Peer Connection and b/f cache (#2346)

youennf has just created a new issue for https://github.com/w3c/webrtc-pc:

== Peer Connection and b/f cache ==
Current browsers do not add pages that have a live (or connected) peer connection to the b/f cache. It would be interesting to enable this.
One possibility is for these connections to simulate connection failure so that, should the page be  shown from b/f cache, the application logic would try to restart a connection.

Please view or discuss this issue at https://github.com/w3c/webrtc-pc/issues/2346 using your GitHub account