Function skia_bindings::C_SkAlphaThresholdFilter_Make

pub unsafe extern "C" fn C_SkAlphaThresholdFilter_Make(
    region: *const SkRegion, 
    innerMin: SkScalar, 
    outerMax: SkScalar, 
    input: *mut SkImageFilter, 
    cropRect: *const SkImageFilter_CropRect
) -> *mut SkImageFilter