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

dm/DM.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
 #include "DMSrcSinkAndroid.h"
@@ skipping 478 matching lines @@
     ImageGenSrc* src = new ImageGenSrc(path, mode, alphaType, isGpu);
     push_src("image", folder, src);
 }
 
 static void push_codec_srcs(Path path) {
     sk_sp<SkData> encoded(SkData::MakeFromFileName(path.c_str()));
     if (!encoded) {
         info("Couldn't read %s.", path.c_str());
         return;
     }
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded.get()));
+    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded));
     if (nullptr == codec.get()) {
         info("Couldn't create codec for %s.", path.c_str());
         return;
     }
 
     // native scaling is only supported by WEBP and JPEG
     bool supportsNativeScaling = false;
 
     SkTArray<CodecSrc::Mode> nativeModes;
     nativeModes.push_back(CodecSrc::kCodec_Mode);
@@ skipping 925 matching lines @@
 #endif
 }
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif