Switch new SkImageFilter internal methods over to sk_sp

src/effects/SkColorFilterImageFilter.cpp

 /*
  * Copyright 2012 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 "SkColorFilterImageFilter.h"
 
 #include "SkCanvas.h"
@@ skipping 34 matching lines @@
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     sk_sp<SkColorFilter> cf(buffer.readColorFilter());
     return Create(cf.get(), common.getInput(0), &common.cropRect());
 }
 
 void SkColorFilterImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeFlattenable(fColorFilter.get());
 }
 
-SkSpecialImage* SkColorFilterImageFilter::onFilterImage(SkSpecialImage* source, const Context& ctx,
-                                                        SkIPoint* offset) const {
+sk_sp<SkSpecialImage> SkColorFilterImageFilter::onFilterImage(SkSpecialImage* source,
+                                                              const Context& ctx,
+                                                              SkIPoint* offset) const {
     SkIPoint inputOffset = SkIPoint::Make(0, 0);
-    SkAutoTUnref<SkSpecialImage> input(this->filterInput(0, source, ctx, &inputOffset));
+    sk_sp<SkSpecialImage> input(this->filterInput(0, source, ctx, &inputOffset));
     if (!input) {
         return nullptr;
     }
 
     SkIRect bounds;
     const SkIRect inputBounds = SkIRect::MakeXYWH(inputOffset.fX, inputOffset.fY,
                                                   input->width(), input->height());
     if (!this->applyCropRect(ctx, inputBounds, &bounds)) {
         return nullptr;
     }
@@ skipping 15 matching lines @@
     paint.setXfermodeMode(SkXfermode::kSrc_Mode);
     paint.setColorFilter(fColorFilter);
 
     input->draw(canvas,
                 SkIntToScalar(inputOffset.fX - bounds.fLeft),
                 SkIntToScalar(inputOffset.fY - bounds.fTop),
                 &paint);
 
     offset->fX = bounds.fLeft;
     offset->fY = bounds.fTop;
-    return surf->makeImageSnapshot().release();
+    return surf->makeImageSnapshot();
 }
 
 bool SkColorFilterImageFilter::onIsColorFilterNode(SkColorFilter** filter) const {
     SkASSERT(1 == this->countInputs());
     if (!this->cropRectIsSet()) {
         if (filter) {
             *filter = SkRef(fColorFilter.get());
         }
         return true;
     }
@@ skipping 16 matching lines @@
     if (this->getInput(0)) {
         this->getInput(0)->toString(str);
     }
 
     str->appendf(") color filter: ");
     fColorFilter->toString(str);
 
     str->append(")");
 }
 #endif