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/FloatingPointTextureTest.cpp b/tests/FloatingPointTextureTest.cpp
index 2e79c35..fe0368d 100644
--- a/tests/FloatingPointTextureTest.cpp
+++ b/tests/FloatingPointTextureTest.cpp
@@ -45,7 +45,7 @@
         desc.fConfig = config;
         desc.fOrigin = 0 == origin ?
             kTopLeft_GrSurfaceOrigin : kBottomLeft_GrSurfaceOrigin;
-        SkAutoTUnref<GrTexture> fpTexture(context->textureProvider()->createTexture(
+        sk_sp<GrTexture> fpTexture(context->textureProvider()->createTexture(
             desc, SkBudgeted::kNo, controlPixelData.begin(), 0));
         // Floating point textures are NOT supported everywhere
         if (nullptr == fpTexture) {