Make sp variants for SkData

tests/Writer32Test.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 "SkRandom.h"
 #include "SkReader32.h"
 #include "SkWriter32.h"
@@ skipping 286 matching lines @@
     REPORTER_ASSERT(reporter, sizeWritten == writer.bytesWritten());
     
     writer.writeData(data0);
     sizeWritten += sizes[1];
     REPORTER_ASSERT(reporter, sizeWritten == writer.bytesWritten());
 
     writer.writeData(data1);
     sizeWritten += sizes[2];
     REPORTER_ASSERT(reporter, sizeWritten == writer.bytesWritten());
 
-    SkAutoTUnref<SkData> result(writer.snapshotAsData());
+    auto result(writer.snapshotAsData());
 
     SkReader32 reader(result->data(), result->size());
-    SkAutoTUnref<SkData> d0(reader.readData()),
-                         d1(reader.readData()),
-                         d2(reader.readData());
+    auto d0(reader.readData()),
+         d1(reader.readData()),
+         d2(reader.readData());
 
     REPORTER_ASSERT(reporter, 0 == d0->size());
     REPORTER_ASSERT(reporter, strlen(str)+1 == d1->size());
     REPORTER_ASSERT(reporter, !memcmp(str, d1->data(), strlen(str)+1));
     REPORTER_ASSERT(reporter, 0 == d2->size());
     
     REPORTER_ASSERT(reporter, reader.offset() == sizeWritten);
     REPORTER_ASSERT(reporter, reader.eof());
 }