switch surface to sk_sp

bench/nanobench.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef nanobench_DEFINED
 #define nanobench_DEFINED
 
@@ skipping 26 matching lines @@
     int bogusIntOption;
     bool bogusBool;
 #endif
 };
 
 struct Target {
     explicit Target(const Config& c) : config(c) { }
     virtual ~Target() { }
 
     const Config config;
-    SkAutoTDelete<SkSurface> surface;
+    sk_sp<SkSurface> surface;
 
     /** Called once per target, immediately before any timing or drawing. */
     virtual void setup() { }
 
     /** Called *after* the clock timer is started, before the benchmark
         is drawn. Most back ends just return the canvas passed in,
         but some may replace it. */
     virtual SkCanvas* beginTiming(SkCanvas* canvas) { return canvas; }
 
     /** Called *after* a benchmark is drawn, but before the clock timer
@@ skipping 23 matching lines @@
 
     SkCanvas* getCanvas() const {
         if (!surface.get()) {
             return nullptr;
         }
         return surface->getCanvas();
     }
 };
 
 #endif  // nanobench_DEFINED