Comment 5 for bug 1169362

The work item is to expose mouse event information over DBus. I've updated the bug title accordingly.

Autopilot needs a way to work out what the current mouse cursor position is. Whether that comes from unity8 and a dbus interface, or from mir and some other form of IPC doesn't really matter much.

Whatever we do, it should minimise latency in the communication between the AP test suite and the other end (mir/unity8)