Member of the WebRTC team here. If you go read the bug you linked to, you can see that we added code to Chrome to specifically make this extension possible. I

Member of the WebRTC team here. If you go read the bug you linked to, you can see that we added code to Chrome to specifically make this extension possible. It's in many CLs, but here is an example of one: https://chromium.googlesource.com/chromium/src/+/7c98bab02128ae9fdc4fcc9a9df38588af86290e%5E%21/chrome/common/pref_names.cc https://chromium.googlesource.com/chromium/src/+/7c98bab0212... Further, we recently open sourced our own version of the extension and put it on github: https://github.com/webrtc/samples/tree/master/src/content/extensions/multipleroutes https://github.com/webrtc/samples/tree/master/src/content/ex... And we intend to keep this advanced control, and perhaps more in the future, well-supported long-term.