switch surface to sk_sp

gm/textblobrandomfont.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 "Resources.h"
@@ skipping 84 matching lines @@
         // This GM exists to test a specific feature of the GPU backend.
         if (nullptr == canvas->getGrContext()) {
             skiagm::GM::DrawGpuOnlyMessage(canvas);
             return;
         }
 
         canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorWHITE));
 
         SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
         SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
-        SkAutoTUnref<SkSurface> surface(canvas->newSurface(info, &props));
+        auto surface(canvas->makeSurface(info, &props));
         if (surface) {
             SkPaint paint;
             paint.setAntiAlias(true);
 
             SkCanvas* c = surface->getCanvas();
 
             int stride = SkScalarCeilToInt(fBlob->bounds().height());
             int yOffset = stride / 8;
             for (int i = 0; i < 1; i++) {
                 // fiddle the canvas to force regen of textblobs
@@ skipping 28 matching lines @@
     static const int kHeight = 1600;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new TextBlobRandomFont;)
 }
 #endif