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

src/xps/SkXPSDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTypes.h"
 #if defined(SK_BUILD_FOR_WIN32)
 
@@ skipping 644 matching lines @@
         const SkMatrix& localMatrix,
         const SkShader::TileMode (&xy)[2],
         const SkAlpha alpha,
         IXpsOMTileBrush** xpsBrush) {
     SkDynamicMemoryWStream write;
     if (!SkImageEncoder::EncodeStream(&write, bitmap,
                                       SkImageEncoder::kPNG_Type, 100)) {
         HRM(E_FAIL, "Unable to encode bitmap as png.");
     }
     SkMemoryStream* read = new SkMemoryStream;
-    read->setData(write.copyToData())->unref();
+    read->setData(write.detachAsData());
     SkTScopedComPtr<IStream> readWrapper;
     HRM(SkIStream::CreateFromSkStream(read, true, &readWrapper),
         "Could not create stream from png data.");
 
     const size_t size =
         SK_ARRAY_COUNT(L"/Documents/1/Resources/Images/" L_GUID_ID L".png");
     wchar_t buffer[size];
     wchar_t id[GUID_ID_LEN];
     HR(this->createId(id, GUID_ID_LEN));
     swprintf_s(buffer, size, L"/Documents/1/Resources/Images/%s.png", id);
@@ skipping 1601 matching lines @@
         //SkXPSDevice* dev = new SkXPSDevice(this);
         //SkSize s = SkSize::Make(width, height);
         //dev->BeginCanvas(s, s, SkMatrix::I());
         //return dev;
     }
 #endif
     return new SkXPSDevice(this->fXpsFactory.get());
 }
 
 #endif//defined(SK_BUILD_FOR_WIN32)