Use sk_sp text blob APIs

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 59 matching lines @@
         // The mac emoji string will break us
         if (origEmoji && (!strcmp(osName, "Android") || !strcmp(osName, "Ubuntu"))) {
             const char* emojiText = sk_tool_utils::emoji_sample_text();
             paint.measureText(emojiText, strlen(emojiText), &bounds);
             offset += bounds.height();
             paint.setTypeface(sk_make_sp<SkRandomTypeface>(orig, paint, false));
             sk_tool_utils::add_to_text_blob(&builder, emojiText, paint, 0, offset);
         }
 
         // build
-        fBlob.reset(builder.build());
+        fBlob = builder.make();
     }
 
     SkString onShortName() override {
         return SkString("textblobrandomfont");
     }
 
     SkISize onISize() override {
         return SkISize::Make(kWidth, kHeight);
     }
 
@@ skipping 38 matching lines @@
 
         } else {
             const char* text = "This test requires a surface";
             size_t len = strlen(text);
             SkPaint paint;
             canvas->drawText(text, len, 10, 100, paint);
         }
     }
 
 private:
-    SkAutoTUnref<const SkTextBlob> fBlob;
+    sk_sp<SkTextBlob> fBlob;
 
     static constexpr int kWidth = 2000;
     static constexpr int kHeight = 1600;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new TextBlobRandomFont;)
 }
 #endif