partial switch over to sp usage of shaders

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 17 matching lines @@
     }
 
 protected:
     void onOnceBeforeDraw() override {
         const SkColor colors[] = {
             SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE,
             SK_ColorMAGENTA, SK_ColorCYAN, SK_ColorYELLOW
         };
         SkMatrix local;
         local.setRotate(180);
-        SkShader* s = SkGradientShader::CreateSweep(0,0, colors, nullptr,
-                                                    SK_ARRAY_COUNT(colors), 0, &local);
-
         SkPaint paint;
         paint.setAntiAlias(true);
-        paint.setShader(s)->unref();
+        paint.setShader(SkGradientShader::MakeSweep(0, 0, colors, nullptr, SK_ARRAY_COUNT(colors),
+                                                    0, &local));
 
-        SkTypeface* orig = sk_tool_utils::create_portable_typeface("serif",
-                                                            SkTypeface::kBold);
+        SkTypeface* orig = sk_tool_utils::create_portable_typeface("serif", SkTypeface::kBold);
         if (nullptr == orig) {
             orig = SkTypeface::RefDefault();
         }
         fColorType = new SkGTypeface(orig, paint);
         orig->unref();
 
         fBG.installPixels(SkImageInfo::Make(2, 2, kARGB_4444_SkColorType,
                                             kOpaque_SkAlphaType), gData, 4);
     }
 
@@ skipping 41 matching lines @@
             { SkXfermode::kHue_Mode,          "Hue"         },
             { SkXfermode::kSaturation_Mode,   "Saturation"  },
             { SkXfermode::kColor_Mode,        "Color"       },
             { SkXfermode::kLuminosity_Mode,   "Luminosity"  },
         };
 
         const SkScalar w = SkIntToScalar(W);
         const SkScalar h = SkIntToScalar(H);
         SkMatrix m;
         m.setScale(SkIntToScalar(6), SkIntToScalar(6));
-        SkShader* s = SkShader::CreateBitmapShader(fBG,
-                                                   SkShader::kRepeat_TileMode,
-                                                   SkShader::kRepeat_TileMode,
-                                                   &m);
+        auto s = SkShader::MakeBitmapShader(fBG, SkShader::kRepeat_TileMode,
+                                            SkShader::kRepeat_TileMode, &m);
 
         SkPaint labelP;
         labelP.setAntiAlias(true);
         sk_tool_utils::set_portable_typeface(&labelP);
         labelP.setTextAlign(SkPaint::kCenter_Align);
 
         SkPaint textP;
         textP.setAntiAlias(true);
         textP.setTypeface(fColorType);
         textP.setTextSize(SkIntToScalar(70));
@@ skipping 24 matching lines @@
 #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);
             }
         }
-        s->unref();
     }
 
 private:
     SkBitmap    fBG;
     SkTypeface* fColorType;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ColorTypeXfermodeGM; }
 static GMRegistry reg(MyFactory);
 
 }