switch xfermodes over to sk_sp

gm/composeshader.cpp

 /*
  * Copyright 2012 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 "SkCanvas.h"
@@ skipping 12 matching lines @@
     colors[0] = SK_ColorRED;
     colors[1] = SK_ColorBLUE;
     auto shaderA = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
 
     pts[0].set(0, 0);
     pts[1].set(0, SkIntToScalar(100));
     colors[0] = SK_ColorBLACK;
     colors[1] = SkColorSetARGB(0x80, 0, 0, 0);
     auto shaderB = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
 
-    SkAutoTUnref<SkXfermode> xfer(SkXfermode::Create(mode));
-
-    return SkShader::MakeComposeShader(std::move(shaderA), std::move(shaderB), xfer);
+    return SkShader::MakeComposeShader(std::move(shaderA), std::move(shaderB),
+                                       SkXfermode::Make(mode));
 }
 
 class ComposeShaderGM : public skiagm::GM {
 public:
     ComposeShaderGM() {
         fShader = make_shader(SkXfermode::kDstIn_Mode);
     }
 
 protected:
     SkString onShortName() override {
@@ skipping 123 matching lines @@
 
     SkString onShortName() override {
         return SkString("composeshader_bitmap");
     }
 
     SkISize onISize() override {
         return SkISize::Make(7 * (squareLength + 5), 2 * (squareLength + 5));
     }
 
     void onDraw(SkCanvas* canvas) override {
-        SkAutoTUnref<SkXfermode> xfer(SkXfermode::Create(SkXfermode::kDstOver_Mode));
+        auto xfer(SkXfermode::Make(SkXfermode::kDstOver_Mode));
 
         sk_sp<SkShader> shaders[] = {
             // gradient should appear over color bitmap
             SkShader::MakeComposeShader(fLinearGradientShader, fColorBitmapShader, xfer),
             // gradient should appear over alpha8 bitmap colorized by the paint color
             SkShader::MakeComposeShader(fLinearGradientShader, fAlpha8BitmapShader, xfer),
         };
 
         SkPaint paint;
         paint.setColor(SK_ColorYELLOW);
@@ skipping 30 matching lines @@
     sk_sp<SkShader> fLinearGradientShader;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new ComposeShaderGM; )
 DEF_GM( return new ComposeShaderAlphaGM; )
 DEF_GM( return new ComposeShaderBitmapGM; )