switch xfermodes over to sk_sp

src/effects/SkArithmeticMode.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkArithmeticMode.h"
 #include "SkColorPriv.h"
 #include "SkReadBuffer.h"
@@ skipping 42 matching lines @@
 
     typedef SkXfermode INHERITED;
 };
 
 SkFlattenable* SkArithmeticMode_scalar::CreateProc(SkReadBuffer& buffer) {
     const SkScalar k1 = buffer.readScalar();
     const SkScalar k2 = buffer.readScalar();
     const SkScalar k3 = buffer.readScalar();
     const SkScalar k4 = buffer.readScalar();
     const bool enforcePMColor = buffer.readBool();
-    return SkArithmeticMode::Create(k1, k2, k3, k4, enforcePMColor);
+    return SkArithmeticMode::Make(k1, k2, k3, k4, enforcePMColor).release();
 }
 
 static int pinToByte(int value) {
     if (value < 0) {
         value = 0;
     } else if (value > 255) {
         value = 255;
     }
     return value;
 }
@@ skipping 56 matching lines @@
     for (int i = 0; i < 4; ++i) {
         str->appendScalar(fK[i]);
         str->append(" ");
     }
     str->appendS32(fEnforcePMColor ? 1 : 0);
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkXfermode* SkArithmeticMode::Create(SkScalar k1, SkScalar k2,
-                                     SkScalar k3, SkScalar k4,
-                                     bool enforcePMColor) {
+sk_sp<SkXfermode> SkArithmeticMode::Make(SkScalar k1, SkScalar k2, SkScalar k3, SkScalar k4,
+                                         bool enforcePMColor) {
     if (SkScalarNearlyZero(k1) && SkScalarNearlyEqual(k2, SK_Scalar1) &&
         SkScalarNearlyZero(k3) && SkScalarNearlyZero(k4)) {
-        return SkXfermode::Create(SkXfermode::kSrc_Mode);
+        return SkXfermode::Make(SkXfermode::kSrc_Mode);
     } else if (SkScalarNearlyZero(k1) && SkScalarNearlyZero(k2) &&
                SkScalarNearlyEqual(k3, SK_Scalar1) && SkScalarNearlyZero(k4)) {
-        return SkXfermode::Create(SkXfermode::kDst_Mode);
+        return SkXfermode::Make(SkXfermode::kDst_Mode);
     }
-
-    return new SkArithmeticMode_scalar(k1, k2, k3, k4, enforcePMColor);
+    return sk_make_sp<SkArithmeticMode_scalar>(k1, k2, k3, k4, enforcePMColor);
 }
 
 
 //////////////////////////////////////////////////////////////////////////////
 
 #if SK_SUPPORT_GPU
 const GrFragmentProcessor* SkArithmeticMode_scalar::getFragmentProcessorForImageFilter(
                                                             const GrFragmentProcessor* dst) const {
     return GrArithmeticFP::Create(SkScalarToFloat(fK[0]),
                                   SkScalarToFloat(fK[1]),
                                   SkScalarToFloat(fK[2]),
                                   SkScalarToFloat(fK[3]),
                                   fEnforcePMColor,
                                   dst);
 }
 
 GrXPFactory* SkArithmeticMode_scalar::asXPFactory() const {
     return GrArithmeticXPFactory::Create(SkScalarToFloat(fK[0]),
                                          SkScalarToFloat(fK[1]),
                                          SkScalarToFloat(fK[2]),
                                          SkScalarToFloat(fK[3]),
                                          fEnforcePMColor);
 }
 
 #endif
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkArithmeticMode)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkArithmeticMode_scalar)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END