change flattenable factory to return sk_sp

tests/LayerRasterizerTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDeque.h"
 #include "SkLayerRasterizer.h"
 #include "SkPaint.h"
@@ skipping 25 matching lines @@
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyRasterizer);
 
 private:
     static int gCount;
 
     typedef SkRasterizer INHERITED;
 };
 
 int DummyRasterizer::gCount;
 
-SkFlattenable* DummyRasterizer::CreateProc(SkReadBuffer&) { return new DummyRasterizer; }
+sk_sp<SkFlattenable> DummyRasterizer::CreateProc(SkReadBuffer&) {
+    return sk_make_sp<DummyRasterizer>();
+}
 
 // Check to make sure that the SkPaint in the layer has its destructor called.
 DEF_TEST(LayerRasterizer_destructor, reporter) {
     {
         SkPaint paint;
         paint.setRasterizer(sk_make_sp<DummyRasterizer>());
         REPORTER_ASSERT(reporter, DummyRasterizer::GetCount() == 1);
 
         SkLayerRasterizer::Builder builder;
         builder.addLayer(paint);
@@ skipping 78 matching lines @@
         } else {
             REPORTER_ASSERT(reporter, equals(*recFirstCopy, *recOneLarger));
         }
     }
 }
 
 DEF_TEST(LayerRasterizer_detachEmpty, reporter) {
     SkLayerRasterizer::Builder builder;
     REPORTER_ASSERT(reporter, nullptr == builder.detach());
 }