Make sp variants for SkData

src/core/SkWriter32.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 "SkReader32.h"
 #include "SkString.h"
 #include "SkWriter32.h"
@@ skipping 58 matching lines @@
     fCapacity = 4096 + SkTMax(size, fCapacity + (fCapacity / 2));
     fInternal.realloc(fCapacity);
     fData = fInternal.get();
 
     if (wasExternal) {
         // we were external, so copy in the data
         memcpy(fData, fExternal, fUsed);
     }
 }
 
-SkData* SkWriter32::snapshotAsData() const {
-    return SkData::NewWithCopy(fData, fUsed);
+sk_sp<SkData> SkWriter32::snapshotAsData() const {
+    return SkData::MakeWithCopy(fData, fUsed);
 }