bench, samples, etc: s/SkAutoTUnref/sk_sp/

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4437

Change-Id: Ice071684ac8a99e4bb405b4b9be8e8f42c7bac42
Reviewed-on: https://skia-review.googlesource.com/4437
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/bench/GrResourceCacheBench.cpp b/bench/GrResourceCacheBench.cpp
index 295a5bc..903c773 100644
--- a/bench/GrResourceCacheBench.cpp
+++ b/bench/GrResourceCacheBench.cpp
@@ -69,7 +69,7 @@
     }
 
     void onDraw(int loops, SkCanvas* canvas) override {
-        SkAutoTUnref<GrContext> context(GrContext::CreateMockContext());
+        sk_sp<GrContext> context(GrContext::CreateMockContext());
         if (nullptr == context) {
             return;
         }
@@ -143,14 +143,14 @@
             for (int k = 0; k < CACHE_SIZE_COUNT; ++k) {
                 GrUniqueKey key;
                 BenchResource::ComputeKey(k, fKeyData32Count, &key);
-                SkAutoTUnref<GrGpuResource> resource(cache->findAndRefUniqueResource(key));
+                sk_sp<GrGpuResource> resource(cache->findAndRefUniqueResource(key));
                 SkASSERT(resource);
             }
         }
     }
 
 private:
-    SkAutoTUnref<GrContext> fContext;
+    sk_sp<GrContext> fContext;
     SkString fFullName;
     int fKeyData32Count;
     typedef Benchmark INHERITED;