Update SkXfermodeImageFilter to sk_sp

TBR=reed@google.com

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1852123002

Committed: https://skia.googlesource.com/skia/+/3bc969264d4720d67f0b137552b3777a03b431a8

Review URL: https://codereview.chromium.org/1852123002
diff --git a/tests/SerializationTest.cpp b/tests/SerializationTest.cpp
index 15b7382..9bdfe1e 100644
--- a/tests/SerializationTest.cpp
+++ b/tests/SerializationTest.cpp
@@ -248,7 +248,8 @@
     sk_sp<SkImageFilter> invalidBitmapSource(SkImageSource::Make(std::move(invalidImage)));
     sk_sp<SkImageFilter> xfermodeImageFilter(
         SkXfermodeImageFilter::Make(SkXfermode::Make(SkXfermode::kSrcOver_Mode),
-                                    invalidBitmapSource.get(), validBitmapSource.get(), nullptr));
+                                    std::move(invalidBitmapSource),
+                                    std::move(validBitmapSource), nullptr));
 
     SkAutoTUnref<SkImageFilter> deserializedFilter(
         TestFlattenableSerialization<SkImageFilter>(