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/samplecode/SampleFilterFuzz.cpp b/samplecode/SampleFilterFuzz.cpp
index 900ae7b..3b31ef7 100644
--- a/samplecode/SampleFilterFuzz.cpp
+++ b/samplecode/SampleFilterFuzz.cpp
@@ -726,12 +726,12 @@
     case BITMAP: {
         sk_sp<SkImage> image(SkImage::MakeFromBitmap(make_bitmap()));
         if (R(2) == 1) {
-            filter = sk_sp<SkImageFilter>(SkImageSource::Create(image.get(),
-                                                                make_rect(),
-                                                                make_rect(),
-                                                                kHigh_SkFilterQuality));
+            filter = SkImageSource::Make(std::move(image),
+                                         make_rect(),
+                                         make_rect(),
+                                         kHigh_SkFilterQuality);
         } else {
-            filter = sk_sp<SkImageFilter>(SkImageSource::Create(image.get()));
+            filter = SkImageSource::Make(std::move(image));
         }
         break;
     }