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

include/codec/SkCodec.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCodec_DEFINED
 #define SkCodec_DEFINED
 
@@ skipping 77 matching lines @@
      *      If the image is not a PNG, the SkPngChunkReader will be ignored.
      *      If the image is a PNG, the SkPngChunkReader will be reffed.
      *      If the PNG has unknown chunks, the SkPngChunkReader will be used
      *      to handle these chunks.  SkPngChunkReader will be called to read
      *      any unknown chunk at any point during the creation of the codec
      *      or the decode.  Note that if SkPngChunkReader fails to read a
      *      chunk, this could result in a failure to create the codec or a
      *      failure to decode the image.
      *      If the PNG does not contain unknown chunks, the SkPngChunkReader
      *      will not be used or modified.
-     *
-     *  Will take a ref if it returns a codec, else will not affect the data.
      */
-    static SkCodec* NewFromData(SkData*, SkPngChunkReader* = NULL);
+    static SkCodec* NewFromData(sk_sp<SkData>, SkPngChunkReader* = NULL);
+    static SkCodec* NewFromData(SkData* data, SkPngChunkReader* reader) {
+        return NewFromData(sk_ref_sp(data), reader);
+    }
 
     virtual ~SkCodec();
 
     /**
      *  Return the ImageInfo associated with this codec.
      */
     const SkImageInfo& getInfo() const { return fSrcInfo; }
 
     const SkEncodedInfo& getEncodedInfo() const { return fEncodedInfo; }
 
@@ skipping 617 matching lines @@
 
     // For testing with qcms
     // FIXME: Remove these when we are done comparing with qcms.
     friend class DM::ColorCodecSrc;
     friend class ColorCodecBench;
 
     friend class SkSampledCodec;
     friend class SkIcoCodec;
 };
 #endif // SkCodec_DEFINED