Update SkImageSource to sk_sp

TBR=reed@google.com

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1842243002

Review URL: https://codereview.chromium.org/1842243002
diff --git a/src/utils/SkBitmapSourceDeserializer.cpp b/src/utils/SkBitmapSourceDeserializer.cpp
index eb66fd9..b4fba27 100644
--- a/src/utils/SkBitmapSourceDeserializer.cpp
+++ b/src/utils/SkBitmapSourceDeserializer.cpp
@@ -29,5 +29,5 @@
     }
     bitmap.setImmutable();
 
-    return SkImageSource::Create(SkImage::MakeFromBitmap(bitmap).get(), src, dst, filterQuality);
+    return SkImageSource::Make(SkImage::MakeFromBitmap(bitmap), src, dst, filterQuality).release();
 }