gm: s/SkAutoTUnref/sk_sp/

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4434

Change-Id: Ib2bea321617a17012190b33f2c7c439a5b6b3025
Reviewed-on: https://skia-review.googlesource.com/4434
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
diff --git a/gm/all_bitmap_configs.cpp b/gm/all_bitmap_configs.cpp
index 90df5bb..e954fc3 100644
--- a/gm/all_bitmap_configs.cpp
+++ b/gm/all_bitmap_configs.cpp
@@ -124,10 +124,10 @@
         pmColors[i] = premultiply_color(colors[i]);
     }
     SkBitmap bm;
-    SkAutoTUnref<SkColorTable> ctable(new SkColorTable(pmColors, SK_ARRAY_COUNT(pmColors)));
+    sk_sp<SkColorTable> ctable(new SkColorTable(pmColors, SK_ARRAY_COUNT(pmColors)));
     SkImageInfo info = SkImageInfo::Make(SCALE, SCALE, kIndex_8_SkColorType,
                                          kPremul_SkAlphaType);
-    bm.allocPixels(info, nullptr, ctable);
+    bm.allocPixels(info, nullptr, ctable.get());
     SkAutoLockPixels autoLockPixels1(n32bitmap);
     SkAutoLockPixels autoLockPixels2(bm);
     for (int y = 0; y < SCALE; ++y) {