Liang Qi eaa755dbc9 tests: replace gtk-embedder.py with a gtk3 app
All linux CI machines have gtk3 installed. And Python GTK things
are too complicate to setup.

Change-Id: I3c0d967f61aebea508784df79569b9d0064f66e2
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
(cherry picked from commit aef55501bccd52f63a84228cb2ee201ec4f5c301)
Reviewed-by: Liang Qi <liang.qi@qt.io>
2022-08-06 11:36:07 +02:00
..