tools: s/SkAutoTUnref/sk_sp/

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4391

Change-Id: Iae8b032b00d3579c77f3b86370dde71c4649da45
Reviewed-on: https://skia-review.googlesource.com/4391
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/tools/skiaserve/Request.h b/tools/skiaserve/Request.h
index cadf15c..6b065a2 100644
--- a/tools/skiaserve/Request.h
+++ b/tools/skiaserve/Request.h
@@ -63,7 +63,7 @@
     SkColor getPixel(int x, int y);
 
     UploadContext* fUploadContext;
-    SkAutoTUnref<SkDebugCanvas> fDebugCanvas;
+    sk_sp<SkDebugCanvas> fDebugCanvas;
     UrlDataManager fUrlDataManager;
 
 private:
@@ -76,7 +76,7 @@
 
     sk_sp<SkPicture> fPicture;
     sk_gpu_test::GrContextFactory* fContextFactory;
-    SkAutoTUnref<SkSurface> fSurface;
+    sk_sp<SkSurface> fSurface;
     bool fGPUEnabled;
     bool fOverdraw;
     int fColorMode;