Use sk_sp text blob APIs

gm/lcdoverlap.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.
  */
 
 
 /*
  * Tests overlapping LCD text
@@ skipping 26 matching lines @@
         SkTextBlobBuilder builder;
 
         SkPaint paint;
         sk_tool_utils::set_portable_typeface(&paint);
         paint.setTextSize(32);
         const char* text = "able was I ere I saw elba";
         paint.setAntiAlias(true);
         paint.setSubpixelText(true);
         paint.setLCDRenderText(true);
         sk_tool_utils::add_to_text_blob(&builder, text, paint, 0, 0);
-        fBlob.reset(builder.build());
+        fBlob = builder.make();
     }
 
     SkISize onISize() override { return SkISize::Make(kWidth, kHeight); }
 
     void drawTestCase(SkCanvas* canvas, SkScalar x, SkScalar y, SkXfermode::Mode mode,
                       SkXfermode::Mode mode2) {
         const SkColor colors[] {
                 SK_ColorRED,
                 SK_ColorGREEN,
                 SK_ColorBLUE,
@@ skipping 25 matching lines @@
         drawTestCase(canvas, 3 * offsetX, offsetY,  SkXfermode::kSrcOver_Mode,
                      SkXfermode::kSrcOver_Mode);
         drawTestCase(canvas, offsetX, 3 * offsetY,  SkXfermode::kHardLight_Mode,
                      SkXfermode::kLuminosity_Mode);
         drawTestCase(canvas, 3 * offsetX, 3 * offsetY,  SkXfermode::kSrcOver_Mode,
                      SkXfermode::kSrc_Mode);
     }
 
 private:
     SkScalar fTextHeight;
-    SkAutoTUnref<const SkTextBlob> fBlob;
+    sk_sp<SkTextBlob> fBlob;
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new LcdOverlapGM; )
 }