switch xfermodes over to sk_sp

gm/colortypexfermode.cpp

 /*
  * Copyright 2014 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 "SkBitmap.h"
 #include "SkGradientShader.h"
 #include "SkShader.h"
@@ skipping 103 matching lines @@
         textP.setAntiAlias(true);
         textP.setTypeface(fColorType);
         textP.setTextSize(SkIntToScalar(70));
 
         const int W = 5;
 
         SkScalar x0 = 0;
         SkScalar y0 = 0;
         SkScalar x = x0, y = y0;
         for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) {
-            SkXfermode* mode = SkXfermode::Create(gModes[i].fMode);
-            SkAutoUnref aur(mode);
             SkRect r;
             r.set(x, y, x+w, y+h);
 
             SkPaint p;
             p.setStyle(SkPaint::kFill_Style);
             p.setShader(s);
             canvas->drawRect(r, p);
 
             r.inset(-SK_ScalarHalf, -SK_ScalarHalf);
             p.setStyle(SkPaint::kStroke_Style);
             p.setShader(nullptr);
             canvas->drawRect(r, p);
 
-            textP.setXfermode(mode);
+            textP.setXfermode(SkXfermode::Make(gModes[i].fMode));
             canvas->drawText("H", 1, x+ w/10.f, y + 7.f*h/8.f, textP);
 #if 1
             canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel),
                              x + w/2, y - labelP.getTextSize()/2, labelP);
 #endif
             x += w + SkIntToScalar(10);
             if ((i % W) == W - 1) {
                 x = x0;
                 y += h + SkIntToScalar(30);
             }
         }
     }
 
 private:
     SkBitmap    fBG;
     SkTypeface* fColorType;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ColorTypeXfermodeGM; }
 static GMRegistry reg(MyFactory);
 
 }