Switch SkSpecialImage & SkSpecialSurface classes over to smart pointers

src/core/SkCanvas.cpp

 /*
  * Copyright 2008 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 "SkBitmapDevice.h"
 #include "SkCanvas.h"
 #include "SkCanvasPriv.h"
@@ skipping 1389 matching lines @@
         if (filter && !dstDev->canHandleImageFilter(filter)) {
             SkImageFilter::DeviceProxy proxy(dstDev);
             SkIPoint offset = SkIPoint::Make(0, 0);
             const SkBitmap& srcBM = srcDev->accessBitmap(false);
             SkMatrix matrix = *iter.fMatrix;
             matrix.postTranslate(SkIntToScalar(-pos.x()), SkIntToScalar(-pos.y()));
             const SkIRect clipBounds = iter.fClip->getBounds().makeOffset(-pos.x(), -pos.y());
             SkAutoTUnref<SkImageFilter::Cache> cache(dstDev->getImageFilterCache());
             SkImageFilter::Context ctx(matrix, clipBounds, cache.get());
 
-            SkAutoTUnref<SkSpecialImage> srcImg(SkSpecialImage::internal_fromBM(&proxy, srcBM));
+            sk_sp<SkSpecialImage> srcImg(SkSpecialImage::internal_fromBM(&proxy, srcBM));
             if (!srcImg) {
                 continue; // something disastrous happened
             }
 
-            SkAutoTUnref<SkSpecialImage> resultImg(filter->filterImage(srcImg, ctx, &offset));
+            SkAutoTUnref<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx,
+                                                                       &offset));
             if (resultImg) {
                 SkPaint tmpUnfiltered(*paint);
                 tmpUnfiltered.setImageFilter(nullptr);
                 SkBitmap resultBM;
                 if (resultImg->internal_getBM(&resultBM)) {
                     // TODO: add drawSprite(SkSpecialImage) to SkDevice? (see skbug.com/5073)
                     dstDev->drawSprite(iter, resultBM, pos.x() + offset.x(), pos.y() + offset.y(),
                                        tmpUnfiltered);
                 }
             }
@@ skipping 1609 matching lines @@
     }
 
     if (matrix) {
         canvas->concat(*matrix);
     }
 }
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }