84e575be77
Now that we've removed the X11 specific backend of the idle monitor, add back a cut-down version of it for the explicit purpose of being told about idle time resets when XTest events are used. XTest events are usually used by test suites and remote display software to inject events into an X11 session. We should consider somebody moving the mouse remotely to be just as "active" as somebody moving it locally. https://bugzilla.gnome.org/show_bug.cgi?id=705942