Remove SkAutoTDelete.

Replace with std::unique_ptr.

Change-Id: I5806cfbb30515fcb20e5e66ce13fb5f3b8728176
Reviewed-on: https://skia-review.googlesource.com/4381
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
diff --git a/samplecode/DecodeFile.h b/samplecode/DecodeFile.h
index b954af6..95f3e39 100644
--- a/samplecode/DecodeFile.h
+++ b/samplecode/DecodeFile.h
@@ -15,7 +15,7 @@
                                bool requireUnpremul = false) {
     SkASSERT(kIndex_8_SkColorType != colorType);
     sk_sp<SkData> data(SkData::MakeFromFileName(filename));
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data));
+    std::unique_ptr<SkCodec> codec(SkCodec::NewFromData(data));
     if (!codec) {
         return false;
     }