switch surface to sk_sp

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1817383002
CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot,Build-Mac-Clang-x86_64-Release-CMake-Trybot

Review URL: https://codereview.chromium.org/1817383002
diff --git a/samplecode/SampleTextureDomain.cpp b/samplecode/SampleTextureDomain.cpp
index 2c6dd64..59d0822 100644
--- a/samplecode/SampleTextureDomain.cpp
+++ b/samplecode/SampleTextureDomain.cpp
@@ -60,7 +60,7 @@
         // Note:  GPU-backed bitmaps follow a different rendering path
         // when copying from one GPU device to another.
         SkImageInfo info = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
-        SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
+        auto surface(canvas->makeSurface(info));
 
         srcRect.setXYWH(1, 1, 3, 3);
         dstRect.setXYWH(1, 1, 3, 3);