[RFC wayland-protocols] unstable: add protocol to give focus to a foreign surface

[David Edmundson]

>Hm. If you wanted to, you could make this explicit by requiring an event serial in the export_surface request rather than the wl_surface.

Certainly an option. Though I'm not sure we have a use case of needing
to limit a client releasing its focus?

>Does this interface need to exist?

It doesn't /need/ to, but I need to be able to export a handle
multiple times and it's nice in the client to be able to match up
requests with the reply.