update callsites for Make image factories

not forced yet, as we still have the build-guard. waiting on chrome CL

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1810813003

TBR=

Review URL: https://codereview.chromium.org/1810813003
diff --git a/tests/ImageIsOpaqueTest.cpp b/tests/ImageIsOpaqueTest.cpp
index 739af2b..6f13708 100644
--- a/tests/ImageIsOpaqueTest.cpp
+++ b/tests/ImageIsOpaqueTest.cpp
@@ -49,7 +49,7 @@
 }
 
 static void check_isopaque(skiatest::Reporter* reporter, SkSurface* surface, bool expectedOpaque) {
-    SkAutoTUnref<SkImage> image(surface->newImageSnapshot());
+    sk_sp<SkImage> image(surface->makeImageSnapshot());
     REPORTER_ASSERT(reporter, image->isOpaque() == expectedOpaque);
 }