return pictures as sk_sp

bench/PictureOverheadBench.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // A benchmark designed to isolate the constant overheads of picture recording.
 // We record an empty picture and a picture with one draw op to force memory allocation.
 
 #include "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkPictureRecorder.h"
 
 template <bool kDraw>
 struct PictureOverheadBench : public Benchmark {
     const char* onGetName() override {
         return kDraw ? "picture_overhead_draw" : "picture_overhead_nodraw";
     }
     bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
 
     void onDraw(int loops, SkCanvas*) override {
         SkPictureRecorder rec;
         for (int i = 0; i < loops; i++) {
             rec.beginRecording(SkRect::MakeWH(2000,3000));
             if (kDraw) {
                 rec.getRecordingCanvas()->drawRect(SkRect::MakeXYWH(10, 10, 1000, 1000), SkPaint());
             }
-            SkAutoTUnref<SkPicture> pic(rec.endRecordingAsPicture());
+            (void)rec.finishRecordingAsPicture();
         }
     }
 };
 
 DEF_BENCH(return (new PictureOverheadBench<false>);)
 DEF_BENCH(return (new PictureOverheadBench< true>);)