tests: s/SkAutoTUnref/sk_sp/

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4394

Change-Id: I088b3c6e2adff07abed1e8a50091cc0ec4a4109c
Reviewed-on: https://skia-review.googlesource.com/4394
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/tests/SkpSkGrTest.cpp b/tests/SkpSkGrTest.cpp
index d850daa..c87926e 100644
--- a/tests/SkpSkGrTest.cpp
+++ b/tests/SkpSkGrTest.cpp
@@ -444,7 +444,7 @@
         desc.fWidth = dim.fX;
         desc.fHeight = dim.fY;
         desc.fSampleCnt = 0;
-        SkAutoTUnref<GrTexture> texture(context->createUncachedTexture(desc, nullptr, 0));
+        sk_sp<GrTexture> texture(context->createUncachedTexture(desc, nullptr, 0));
         if (!texture) {
             SkDebugf("unable to allocate texture for %s (w=%d h=%d)\n", fFilename,
                 dim.fX, dim.fY);