Move off SK_SUPPORT_LEGACY_DATA_FACTORIES.

This moves Skia code off of SK_SUPPORT_LEGACY_DATA_FACTORIES.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2206633004

Review-Url: https://codereview.chromium.org/2206633004
diff --git a/samplecode/DecodeFile.h b/samplecode/DecodeFile.h
index 26d5d2d..3995238 100644
--- a/samplecode/DecodeFile.h
+++ b/samplecode/DecodeFile.h
@@ -12,8 +12,8 @@
 inline bool decode_file(const char* filename, SkBitmap* bitmap,
         SkColorType colorType = kN32_SkColorType, bool requireUnpremul = false) {
     SkASSERT(kIndex_8_SkColorType != colorType);
-    SkAutoTUnref<SkData> data(SkData::NewFromFileName(filename));
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data));
+    sk_sp<SkData> data(SkData::MakeFromFileName(filename));
+    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data.get()));
     if (!codec) {
         return false;
     }