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/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index 27cb6aa..f571b5d 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -818,7 +818,7 @@
         //        We have disabled these tests in DM.cpp.
         SkASSERT(kGray_8_SkColorType != gen->getInfo().colorType());
 
-        SkAutoTDelete<SkImage> image(SkImage::NewFromGenerator(gen.release(), nullptr));
+        sk_sp<SkImage> image(SkImage::MakeFromGenerator(gen.release(), nullptr));
         if (!image) {
             return "Could not create image from codec image generator.";
         }
@@ -1315,7 +1315,7 @@
         mpd.draw();
         for (int j = 0; j < yTiles; j++) {
             for (int i = 0; i < xTiles; i++) {
-                SkAutoTUnref<SkImage> image(surfaces[i+xTiles*j]->newImageSnapshot());
+                sk_sp<SkImage> image(surfaces[i+xTiles*j]->makeImageSnapshot());
                 canvas->drawImage(image, SkIntToScalar(i*fW), SkIntToScalar(j*fH));
             }
         }