change flattenable factory to return sk_sp

src/effects/SkMorphologyImageFilter.cpp

Index: src/effects/SkMorphologyImageFilter.cpp
diff --git a/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index dbb116ed22a6f1cc9560d38ebddbec2faef74921..bf8811b88702a7caf69e8cacde999b200a1194ac 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -72,18 +72,20 @@ SkIRect SkMorphologyImageFilter::onFilterNodeBounds(const SkIRect& src, const Sk
     return src.makeOutset(SkScalarCeilToInt(radius.x()), SkScalarCeilToInt(radius.y()));
 }
 
-SkFlattenable* SkErodeImageFilter::CreateProc(SkReadBuffer& buffer) {
+sk_sp<SkFlattenable> SkErodeImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     const int width = buffer.readInt();
     const int height = buffer.readInt();
-    return Create(width, height, common.getInput(0).get(), &common.cropRect());
+    return sk_sp<SkFlattenable>(Create(width, height, common.getInput(0).get(),
+                                       &common.cropRect()));
 }
 
-SkFlattenable* SkDilateImageFilter::CreateProc(SkReadBuffer& buffer) {
+sk_sp<SkFlattenable> SkDilateImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     const int width = buffer.readInt();
     const int height = buffer.readInt();
-    return Create(width, height, common.getInput(0).get(), &common.cropRect());
+    return sk_sp<SkFlattenable>(Create(width, height, common.getInput(0).get(),
+                                       &common.cropRect()));
 }
 
 #ifndef SK_IGNORE_TO_STRING