Move off SK_SUPPORT_LEGACY_DATA_FACTORIES.

src/images/SkKTXImageEncoder.cpp

Index: src/images/SkKTXImageEncoder.cpp
diff --git a/src/images/SkKTXImageEncoder.cpp b/src/images/SkKTXImageEncoder.cpp
index 4b318a240c4ce6a764670d5736dfcdd7a631b35a..078cec6b4d3fec0b5583a4928a395e68ec9c66da 100644
--- a/src/images/SkKTXImageEncoder.cpp
+++ b/src/images/SkKTXImageEncoder.cpp
@@ -46,13 +46,13 @@ bool SkKTXImageEncoder::onEncode(SkWStream* stream, const SkBitmap& bitmap, int)
     if (!bitmap.pixelRef()) {
         return false;
     }
-    SkAutoDataUnref data(bitmap.pixelRef()->refEncodedData());
+    sk_sp<SkData> data(bitmap.pixelRef()->refEncodedData());
 
     // Is this even encoded data?
     if (data) {
         const uint8_t *bytes = data->bytes();
         if (etc1_pkm_is_valid(bytes)) {
-            return this->encodePKM(stream, data);
+            return this->encodePKM(stream, data.get());
         }
 
         // Is it a KTX file??