overview: Avoid entering in overview mode during display grab op
ClutterGrab and display grab operations are pretty much mutually
exclusive, but there's no mechanism to ensure a ClutterGrab does
not step on top of an existing grab operation.
This looks the only place that could trigger that (e.g. start
dragging window, then move pointer to top/left corner), so skip
over the situation here explicitly.
projects / gnome-shell.git / commit