Don't draw bg gradient on d.isBase() if it's modified by app CCBUG: 264213
Don't draw bg gradient on d.isBase() if it's modified by app
CCBUG: 264213

blueshell-next/carbon-gtk,blueshell-next/carbon-gtk,KDE/oxygen-gtk,KDE/oxygen-gtk,blue-shell/carbon-gtk,blue-shell/carbon-gtk