src/gpu: s/SkAutoTUnref/sk_sp/g

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4527

Change-Id: I23f0548f98e7c355da05e143e8baa330d4bc04cc
Reviewed-on: https://skia-review.googlesource.com/4527
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/src/gpu/GrSWMaskHelper.cpp b/src/gpu/GrSWMaskHelper.cpp
index 2671630..9430efb 100644
--- a/src/gpu/GrSWMaskHelper.cpp
+++ b/src/gpu/GrSWMaskHelper.cpp
@@ -194,8 +194,8 @@
                                                      maskMatrix,
                                                      GrTextureParams::kNone_FilterMode));
 
-    SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(paint.getColor(),
-                                                                        SkMatrix::I(),
-                                                                        dstRect, nullptr, &invert));
-    renderTargetContext->drawBatch(pipelineBuilder, clip, batch);
+    sk_sp<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(paint.getColor(),
+                                                                 SkMatrix::I(),
+                                                                 dstRect, nullptr, &invert));
+    renderTargetContext->drawBatch(pipelineBuilder, clip, batch.get());
 }