qt: use the new `RoundedRectangleShadow` in CSD
This makes RectangularGlow
obsolete, as there are no other place that use it or going to potentially use it, so I removed it.
Request review @chub.
This makes RectangularGlow
obsolete, as there are no other place that use it or going to potentially use it, so I removed it.
Request review @chub.
VideoLAN code repository instance