Use sk_sp text blob APIs

gm/textblobmixedsizes.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 62 matching lines @@
         sk_tool_utils::add_to_text_blob(&builder, text, paint, 0, yOffset);
 
         // Zero size.
         paint.measureText(text, strlen(text), &bounds);
         yOffset += bounds.height();
         paint.setTextSize(0);
 
         sk_tool_utils::add_to_text_blob(&builder, text, paint, 0, yOffset);
 
         // build
-        fBlob.reset(builder.build());
+        fBlob = builder.make();
     }
 
     SkString onShortName() override {
         SkString name("textblobmixedsizes");
         if (fUseDFT) {
             name.appendf("_df");
         }
         return name;
     }
 
@@ skipping 76 matching lines @@
         if (surface) {
             SkAutoCanvasRestore acr(inputCanvas, true);
             // since we prepended this matrix already, we blit using identity
             inputCanvas->resetMatrix();
             inputCanvas->drawImage(surface->makeImageSnapshot().get(), 0, 0, nullptr);
         }
 #endif
     }
 
 private:
-    SkAutoTUnref<const SkTextBlob> fBlob;
+    sk_sp<SkTextBlob> fBlob;
 
     static constexpr int kWidth = 2100;
     static constexpr int kHeight = 1900;
 
     bool fUseDFT;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new TextBlobMixedSizes(false); )
 #if SK_SUPPORT_GPU
 DEF_GM( return new TextBlobMixedSizes(true); )
 #endif
 }