change flattenable factory to return sk_sp

src/effects/SkPixelXorXfermode.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPixelXorXfermode.h"
 #include "SkColorPriv.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkString.h"
 
 // we always return an opaque color, 'cause I don't know what to do with
 // the alpha-component and still return a valid premultiplied color.
 SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst) const {
     SkPMColor res = src ^ dst ^ fOpColor;
 
     res |= (SK_A32_MASK << SK_A32_SHIFT);   // force it to be opaque
     return res;
 }
 
 void SkPixelXorXfermode::flatten(SkWriteBuffer& wb) const {
     wb.writeColor(SkColorSetRGB(SkGetPackedR32(fOpColor),
                                 SkGetPackedG32(fOpColor),
                                 SkGetPackedB32(fOpColor)));
 }
 
-SkFlattenable* SkPixelXorXfermode::CreateProc(SkReadBuffer& buffer) {
-    return Make(buffer.readColor()).release();
+sk_sp<SkFlattenable> SkPixelXorXfermode::CreateProc(SkReadBuffer& buffer) {
+    return Make(buffer.readColor());
 }
 
 #ifndef SK_IGNORE_TO_STRING
 void SkPixelXorXfermode::toString(SkString* str) const {
     str->append("SkPixelXorXfermode: ");
     str->appendHex(fOpColor);
 }
 #endif
 
 #if SK_SUPPORT_GPU
@@ skipping 330 matching lines @@
 const GrFragmentProcessor* SkPixelXorXfermode::getFragmentProcessorForImageFilter(
                                                         const GrFragmentProcessor* dst) const {
     return PixelXorFP::Create(fOpColor, dst);
 }
 
 GrXPFactory* SkPixelXorXfermode::asXPFactory() const {
     return GrPixelXorXPFactory::Create(fOpColor);
 }
 
 #endif