It is all in MobileTextSelection instead of Private now.

BUG: 400983

I dont understand why in every component there's two of them, one in a Component and the other not but whatever. This works now.

Note that when moving files about in plasmacomponents 3 you must do a clean build as our cmake foo to change the import numbers doesn't pick that up which is probably why this breakage went unnoticed. It also only broke here once I did a clean build or got the packages shipped from neon... Also, I would appreciate if you could test media controller when you do plasma components 3 changes as this seems to be the only user of that stuff right now and constantly breaks for doing so ...