switch xfermodes over to sk_sp

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 42 matching lines @@
                       SkXfermode::Mode mode2) {
         const SkColor colors[] {
                 SK_ColorRED,
                 SK_ColorGREEN,
                 SK_ColorBLUE,
                 SK_ColorYELLOW,
                 SK_ColorCYAN,
                 SK_ColorMAGENTA,
         };
 
-        SkAutoTUnref<SkXfermode> xfermode(SkXfermode::Create(mode));
-        SkAutoTUnref<SkXfermode> xfermode2(SkXfermode::Create(mode2));
+        sk_sp<SkXfermode> xfermode(SkXfermode::Make(mode));
+        sk_sp<SkXfermode> xfermode2(SkXfermode::Make(mode2));
         for (size_t i = 0; i < SK_ARRAY_COUNT(colors); i++) {
             canvas->save();
             canvas->translate(x, y);
             canvas->rotate(360.0f / SK_ARRAY_COUNT(colors) * i);
             canvas->translate(-fBlob->bounds().width() / 2.0f + 0.5f, 0);
 
             SkPaint textPaint;
             textPaint.setColor(colors[i]);
             textPaint.setXfermode(i % 2 == 0 ? xfermode : xfermode2);
             canvas->drawTextBlob(fBlob, 0, 0, textPaint);
@@ skipping 16 matching lines @@
 private:
     SkScalar fTextHeight;
     SkAutoTUnref<const SkTextBlob> fBlob;
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new LcdOverlapGM; )
 }