switch surface to sk_sp

gm/color4f.cpp

 /*
  * Copyright 2011 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 "SkColorPriv.h"
@@ skipping 59 matching lines @@
 
     SkPaint bg;
     // need the target to be opaque, so we can draw it to the screen
     // even if it holds sRGB values.
     bg.setColor(0xFFFFFFFF);
 
     SkColorProfileType const profiles[] { kLinear_SkColorProfileType, kSRGB_SkColorProfileType };
     for (auto profile : profiles) {
         const SkImageInfo info = SkImageInfo::Make(1024, 100, kN32_SkColorType, kPremul_SkAlphaType,
                                                    profile);
-        SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
+        auto surface(SkSurface::MakeRaster(info));
         surface->getCanvas()->drawPaint(bg);
         draw_into_canvas(surface->getCanvas());
         surface->draw(canvas, 0, 0, nullptr);
         canvas->translate(0, 120);
     }
 }