Code review comment for lp:~doanac/phablet-tools/unlock_screen

The plan is that we should restart unity8 under testability and use an emulator from the unity8 suite to do this, directly in app tests.

We might build most of that *into* the unity8 emulator, like you would import it, tell it to unlock, and it would do the things it needs (restart unity8 under testability, introspect it and use stuff maintained by unity8 to unlock).

Otherwise we'll end up with 10 places unlocking unity8, none of which are reliable or the unity8 team has control over.