switch surface to sk_sp

gm/mipmap.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.
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkImage.h"
 #include "SkRandom.h"
 #include "SkSurface.h"
 
 static sk_sp<SkImage> make_image() {
     const SkImageInfo info = SkImageInfo::MakeN32Premul(319, 52);
-    SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
+    auto surface(SkSurface::MakeRaster(info));
     SkCanvas* canvas = surface->getCanvas();
     canvas->drawColor(sk_tool_utils::color_to_565(0xFFF8F8F8));
 
     SkPaint paint;
     paint.setAntiAlias(true);
 
     paint.setStyle(SkPaint::kStroke_Style);
     for (int i = 0; i < 20; ++i) {
         canvas->drawCircle(-4, 25, 20, paint);
         canvas->translate(25, 0);
@@ skipping 14 matching lines @@
 
     canvas->translate(20, 20);
     for (int i = 0; i < 4; ++i) {
         paint.setFilterQuality(SkFilterQuality(i));
         canvas->drawImageRect(img.get(), dst, &paint);
         canvas->translate(0, 20);
     }
     canvas->drawImage(img.get(), 20, 20, nullptr);
 }