change flattenable factory to return sk_sp

src/core/SkShader.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAtomics.h"
 #include "SkBitmapProcShader.h"
 #include "SkColorShader.h"
@@ skipping 246 matching lines @@
 #include "SkUtils.h"
 
 SkColorShader::SkColorShader(SkColor c)
     : fColor(c) {
 }
 
 bool SkColorShader::isOpaque() const {
     return SkColorGetA(fColor) == 255;
 }
 
-SkFlattenable* SkColorShader::CreateProc(SkReadBuffer& buffer) {
-    return new SkColorShader(buffer.readColor());
+sk_sp<SkFlattenable> SkColorShader::CreateProc(SkReadBuffer& buffer) {
+    return sk_make_sp<SkColorShader>(buffer.readColor());
 }
 
 void SkColorShader::flatten(SkWriteBuffer& buffer) const {
     buffer.writeColor(fColor);
 }
 
 uint32_t SkColorShader::ColorShaderContext::getFlags() const {
     return fFlags;
 }
 
@@ skipping 133 matching lines @@
             state->fBlitBW = D64_BlitBW;
             state->fBlitAA = D64_BlitAA;
             return true;
         default:
             return false;
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkFlattenable* SkEmptyShader::CreateProc(SkReadBuffer&) {
-    return SkShader::MakeEmptyShader().release();
+sk_sp<SkFlattenable> SkEmptyShader::CreateProc(SkReadBuffer&) {
+    return SkShader::MakeEmptyShader();
 }
 
 #ifndef SK_IGNORE_TO_STRING
 #include "SkEmptyShader.h"
 
 void SkEmptyShader::toString(SkString* str) const {
     str->append("SkEmptyShader: (");
 
     this->INHERITED::toString(str);
 
@@ skipping 20 matching lines @@
 }
 #endif
 
 #ifdef SK_SUPPORT_LEGACY_XFERMODE_PTR
 #include "SkXfermode.h"
 sk_sp<SkShader> SkShader::MakeComposeShader(sk_sp<SkShader> dst, sk_sp<SkShader> src,
                                             SkXfermode* xfer) {
     return MakeComposeShader(std::move(dst), std::move(src), sk_ref_sp(xfer));
 }
 #endif