Convert SkAutoTUnref<SkData> to sk_sp<SkData>.

src/image/SkImage_Gpu.cpp

Index: src/image/SkImage_Gpu.cpp
diff --git a/src/image/SkImage_Gpu.cpp b/src/image/SkImage_Gpu.cpp
index 6cce96c1f7507113afe9fa6d43c906512e74f50f..c795d54fcbb0aaf68bbd63c7e034cfda8e0f7af4 100644
--- a/src/image/SkImage_Gpu.cpp
+++ b/src/image/SkImage_Gpu.cpp
@@ -440,7 +440,7 @@ size_t SkImage::getDeferredTextureImageData(const GrContextThreadSafeProxy& prox
         // Here we're just using presence of data to know whether there is a codec behind the image.
         // In the future we will access the cacherator and get the exact data that we want to (e.g.
         // yuv planes) upload.
-        SkAutoTUnref<SkData> data(this->refEncoded());
+        sk_sp<SkData> data(this->refEncoded());
         if (!data && !this->peekPixels(nullptr)) {
             return 0;
         }