Base SkAutoTUnref on skstd::unique_ptr.

tools/PictureRenderer.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "PictureRenderer.h"
 #include "picture_utils.h"
 #include "SamplePipeControllers.h"
@@ skipping 58 matching lines @@
     SkASSERT(nullptr == fCanvas.get());
     if (fPicture || fCanvas.get()) {
         return;
     }
 
     SkASSERT(pict != nullptr);
     if (nullptr == pict) {
         return;
     }
 
-    fPicture.reset(pict)->ref();
+    fPicture.reset(SkRef(pict));
     fCanvas.reset(this->setupCanvas());
 }
 
 void PictureRenderer::CopyString(SkString* dest, const SkString* src) {
     if (src) {
         dest->set(*src);
     } else {
         dest->reset();
     }
 }
@@ skipping 406 matching lines @@
                                 const SkString* mismatchPath, const SkString* inputFilename,
                                 bool useChecksumBasedFilenames, bool useMultiPictureDraw) {
     SkASSERT(pict);
     SkASSERT(0 == fTileRects.count());
     if (nullptr == pict || fTileRects.count() != 0) {
         return;
     }
 
     // Do not call INHERITED::init(), which would create a (potentially large) canvas which is not
     // used by bench_pictures.
-    fPicture.reset(pict)->ref();
+    fPicture.reset(SkRef(pict));
     this->CopyString(&fWritePath, writePath);
     this->CopyString(&fMismatchPath, mismatchPath);
     this->CopyString(&fInputFilename, inputFilename);
     fUseChecksumBasedFilenames = useChecksumBasedFilenames;
     fUseMultiPictureDraw = useMultiPictureDraw;
     this->buildBBoxHierarchy();
 
     if (fTileWidthPercentage > 0) {
         fTileWidth = SkScalarCeilToInt(float(fTileWidthPercentage * fPicture->cullRect().width() / 100));
     }
@@ skipping 308 matching lines @@
         case kNone_BBoxHierarchyType:
             return nullptr;
         case kRTree_BBoxHierarchyType:
             return new SkRTreeFactory;
     }
     SkASSERT(0); // invalid bbhType
     return nullptr;
 }
 
 } // namespace sk_tools