Use sk_sp text blob APIs

gm/largeglyphblur.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 
 #include "SkBlurMask.h"
@@ skipping 14 matching lines @@
         // setup up maskfilter
         const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(40));
 
         SkPaint blurPaint(paint);
         blurPaint.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle, kSigma));
 
         SkTextBlobBuilder builder;
 
         sk_tool_utils::add_to_text_blob(&builder, text, paint, 0, 0);
 
-        SkAutoTUnref<const SkTextBlob> blob(builder.build());
-        canvas->drawTextBlob(blob.get(), 10, 200, blurPaint);
-        canvas->drawTextBlob(blob.get(), 10, 200, paint);
+        sk_sp<SkTextBlob> blob(builder.make());
+        canvas->drawTextBlob(blob, 10, 200, blurPaint);
+        canvas->drawTextBlob(blob, 10, 200, paint);
 
         size_t len = strlen(text);
         canvas->drawText(text, len, 10, 500, blurPaint);
         canvas->drawText(text, len, 10, 500, paint);
 }