Use sk_sp text blob APIs

gm/textblobtransforms.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 31 matching lines @@
 
         paint.measureText(text, strlen(text), &bounds);
         SkScalar yOffset = bounds.height();
 
         // Small
         paint.setTextSize(32);
         text = "C";
         sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset, -yOffset - 10);
 
         // build
-        fBlob.reset(builder.build());
+        fBlob = builder.make();
     }
 
     SkString onShortName() override {
         return SkString("textblobtransforms");
     }
 
     SkISize onISize() override {
         return SkISize::Make(kWidth, kHeight);
     }
 
@@ skipping 88 matching lines @@
         canvas->scale(1.f, 5.f);
         canvas->drawTextBlob(fBlob, 0, 0, paint);
 
         canvas->rotate(5.f);
         canvas->translate(xOffset, 0);
         canvas->scale(5.f, 1.f);
         canvas->drawTextBlob(fBlob, 0, 0, paint);
     }
 
 private:
-    SkAutoTUnref<const SkTextBlob> fBlob;
+    sk_sp<SkTextBlob> fBlob;
 
     static constexpr int kWidth = 1000;
     static constexpr int kHeight = 1200;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new TextBlobTransforms;)
 }