change flattenable factory to return sk_sp

src/effects/SkBlurImageFilter.cpp

 /*
  * Copyright 2011 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 "SkBlurImageFilter.h"
 
 #include "SkAutoPixmapStorage.h"
@@ skipping 24 matching lines @@
     return sigma;
 }
 
 SkBlurImageFilter::SkBlurImageFilter(SkScalar sigmaX,
                                      SkScalar sigmaY,
                                      SkImageFilter* input,
                                      const CropRect* cropRect)
     : INHERITED(1, &input, cropRect), fSigma(SkSize::Make(sigmaX, sigmaY)) {
 }
 
-SkFlattenable* SkBlurImageFilter::CreateProc(SkReadBuffer& buffer) {
+sk_sp<SkFlattenable> SkBlurImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkScalar sigmaX = buffer.readScalar();
     SkScalar sigmaY = buffer.readScalar();
-    return Create(sigmaX, sigmaY, common.getInput(0).get(), &common.cropRect());
+    return sk_sp<SkFlattenable>(Create(sigmaX, sigmaY, common.getInput(0).get(),
+                                       &common.cropRect()));
 }
 
 void SkBlurImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeScalar(fSigma.fWidth);
     buffer.writeScalar(fSigma.fHeight);
 }
 
 static void get_box3_params(SkScalar s, int *kernelSize, int* kernelSize3, int *lowOffset,
                             int *highOffset) {
@@ skipping 178 matching lines @@
     str->appendf("SkBlurImageFilter: (");
     str->appendf("sigma: (%f, %f) input (", fSigma.fWidth, fSigma.fHeight);
 
     if (this->getInput(0)) {
         this->getInput(0)->toString(str);
     }
 
     str->append("))");
 }
 #endif