change SkStreams to work with sk_sp<SkData> instead of SkData*

tests/CodecPriv.h

Index: tests/CodecPriv.h
diff --git a/tests/CodecPriv.h b/tests/CodecPriv.h
index 4e42731b0117a1a433ef986fd23869880c3402a0..a5afb09ba4947e5524dc592ad643c6f72e865a82 100644
--- a/tests/CodecPriv.h
+++ b/tests/CodecPriv.h
@@ -10,9 +10,7 @@
 #include "SkData.h"
 
 inline bool decode_memory(const void* mem, size_t size, SkBitmap* bm) {
-    sk_sp<SkData> data(SkData::MakeWithoutCopy(mem, size));
-
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data.get()));
+    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(SkData::MakeWithoutCopy(mem, size)));
     if (!codec) {
         return false;
     }