Update DropShadowImageFilter to sk_sp

gm/imagefiltersstroked.cpp

Index: gm/imagefiltersstroked.cpp
diff --git a/gm/imagefiltersstroked.cpp b/gm/imagefiltersstroked.cpp
index cca87375d41a78ecc9cea5a8d4a29dc9f808b306..13dc705433a4082fc1fa4129e4a611a57c37f0b5 100644
--- a/gm/imagefiltersstroked.cpp
+++ b/gm/imagefiltersstroked.cpp
@@ -59,8 +59,9 @@ protected:
 
         sk_sp<SkImageFilter> filters[] = {
             SkBlurImageFilter::Make(5, 5, nullptr),
-            sk_sp<SkImageFilter>(SkDropShadowImageFilter::Create(10, 10, 3, 3, SK_ColorGREEN,
-                            SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode)),
+            SkDropShadowImageFilter::Make(10, 10, 3, 3, SK_ColorGREEN,
+                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
+                nullptr),
             SkOffsetImageFilter::Make(-16, 32, nullptr),
             SkImageFilter::MakeMatrixFilter(resizeMatrix, kNone_SkFilterQuality, nullptr),
         };