Pixel 7.1.2 with Chrome 59.0.3063.0.

See the screencast.
A couple of notable issues:
- availability is reported as true - probably what we want, but I want to confirm that's reported correctly by Cast SDK (does it always return true hoping for nearby or does it somehow detect CC devices without Wi-Fi?)
- once the PIN dialog is shown, the prompt() promise is resolved with disconnected (might be because the dialog fragment is dismissed?)