change flattenable factory to return sk_sp

src/core/SkBlitter.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 "SkBlitter.h"
 #include "SkAntiRun.h"
 #include "SkColor.h"
@@ skipping 712 matching lines @@
     void flatten(SkWriteBuffer& buffer) const override {
         buffer.writeFlattenable(fProxy.get());
     }
 
 private:
     sk_sp<SkShader> fProxy;
 
     typedef SkShader INHERITED;
 };
 
-SkFlattenable* Sk3DShader::CreateProc(SkReadBuffer& buffer) {
-    return new Sk3DShader(buffer.readShader());
+sk_sp<SkFlattenable> Sk3DShader::CreateProc(SkReadBuffer& buffer) {
+    return sk_make_sp<Sk3DShader>(buffer.readShader());
 }
 
 class Sk3DBlitter : public SkBlitter {
 public:
     Sk3DBlitter(SkBlitter* proxy, SkShader::Context* shaderContext)
         : fProxy(proxy)
         , fShaderContext(shaderContext)
     {}
 
     void blitH(int x, int y, int width) override {
         fProxy->blitH(x, y, width);
     }
 
-    virtual void blitAntiH(int x, int y, const SkAlpha antialias[],
-                           const int16_t runs[]) override {
+    void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override {
         fProxy->blitAntiH(x, y, antialias, runs);
     }
 
     void blitV(int x, int y, int height, SkAlpha alpha) override {
         fProxy->blitV(x, y, height, alpha);
     }
 
     void blitRect(int x, int y, int width, int height) override {
         fProxy->blitRect(x, y, width, height);
     }
@@ skipping 244 matching lines @@
     fShaderContext->~Context();
     SkShader::Context* ctx = fShader->createContext(rec, (void*)fShaderContext);
     if (nullptr == ctx) {
         // Need a valid context in fShaderContext's storage, so we can later (or our caller) call
         // the in-place destructor.
         new (fShaderContext) SkZeroShaderContext(*fShader, rec);
         return false;
     }
     return true;
 }