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/SKPBench.cpp b/bench/SKPBench.cpp
index add415d..7d92c9e 100644
--- a/bench/SKPBench.cpp
+++ b/bench/SKPBench.cpp
@@ -135,7 +135,7 @@
         SkMatrix trans;
         trans.setTranslate(-fTileRects[j].fLeft/fScale,
                            -fTileRects[j].fTop/fScale);
-        mpd.add(fSurfaces[j]->getCanvas(), fPic, &trans);
+        mpd.add(fSurfaces[j]->getCanvas(), fPic.get(), &trans);
     }
 
     mpd.draw();
@@ -149,7 +149,7 @@
     for (int j = 0; j < fTileRects.count(); ++j) {
         const SkMatrix trans = SkMatrix::MakeTrans(-fTileRects[j].fLeft / fScale,
                                                    -fTileRects[j].fTop / fScale);
-        fSurfaces[j]->getCanvas()->drawPicture(fPic, &trans, nullptr);
+        fSurfaces[j]->getCanvas()->drawPicture(fPic.get(), &trans, nullptr);
     }
 
     for (int j = 0; j < fTileRects.count(); ++j) {
@@ -190,10 +190,10 @@
     context->freeGpuResources();
     context->resetContext();
     context->getGpu()->resetShaderCacheForTesting();
-    draw_pic_for_stats(canvas, context, fPic, keys, values, "first_frame");
+    draw_pic_for_stats(canvas, context, fPic.get(), keys, values, "first_frame");
 
     // draw second frame
-    draw_pic_for_stats(canvas, context, fPic, keys, values, "second_frame");
+    draw_pic_for_stats(canvas, context, fPic.get(), keys, values, "second_frame");
 
 #endif
 }