Mark windows for offsceen rendering in WindowThumbnailSource
This way if an effect wants to show such window that is for example on a different virtual desktop it is updated live. BUG:456280 FIXED-IN:6.0.4
(cherry picked from commit 1573d04b)
This way if an effect wants to show such window that is for example on a different virtual desktop it is updated live. BUG:456280 FIXED-IN:6.0.4
(cherry picked from commit 1573d04b)