Pekka Paalanen authored Dec 08, 2022 and Pekka Paalanen committed Dec 14, 2022

Use the gl-renderer border code shared with headless-backend. We can
drop all this open-coded stuff.

In the output disable path, make sure to call this only when gl-renderer
is used. It will also reset the border state in gl-renderer, which is
harmless here, and it's necessary in the resize path.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>