Make sp variants for SkData

include/core/SkWriter32.h

 
 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkWriter32_DEFINED
@@ skipping 228 matching lines @@
 
     // read from the stream, and write up to length bytes. Return the actual
     // number of bytes written.
     size_t readFromStream(SkStream* stream, size_t length) {
         return stream->read(this->reservePad(length), length);
     }
 
     /**
      *  Captures a snapshot of the data as it is right now, and return it.
      */
-    SkData* snapshotAsData() const;
+    sk_sp<SkData> snapshotAsData() const;
 private:
     void growToAtLeast(size_t size);
 
     uint8_t* fData;                    // Points to either fInternal or fExternal.
     size_t fCapacity;                  // Number of bytes we can write to fData.
     size_t fUsed;                      // Number of bytes written.
     void* fExternal;                   // Unmanaged memory block.
     SkAutoTMalloc<uint8_t> fInternal;  // Managed memory block.
 };
 
@@ skipping 13 matching lines @@
     union {
         void*   fPtrAlignment;
         double  fDoubleAlignment;
         char    fStorage[SIZE];
     } fData;
 
     typedef SkWriter32 INHERITED;
 };
 
 #endif