418ffe4a0f
SlashDrawable wraps a reference to Drawable in order to store the intended Drawable and optionally draw a slash over it. As such, it should probably have similar semantics to Drawable, in that it either exists or doesn't; if you set SlashImageView's drawable to `null`, you'd expect that the drawable goes away, not that the SlashDrawable's contained Drawable goes away but the slash stays. Test: runtest systemui Change-Id: I34b92716cc60ba5043ab68ae09954f5a5e97e562 Fixes: 62525439