We would like to automatically verify the prompting and syncing behavior of Sync with a master password enabled. That's a two-part exercise: * We want a better CrossWeave, so we can drive a UI around this * We want to be able to programmatically fiddle with the master password UI and the login manager. Attached is a WIP for stubbing out the nsITokenPasswordDialogs -- it doesn't work, but it'll be a useful starting point. See also Bug 543784, which is a motivator for these tests.

Realistically, we're unlikely to get to this. Master Password interaction with Sync (and with the rest of Firefox) has been a pain point, and we'll want new tests for Sync.future (with Lockbox?), anyway.