Update SkMorphology ImageFilters to sk_sp

bench/MorphologyBench.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkMorphologyImageFilter.h"
@@ skipping 28 matching lines @@
         fStyle = style;
         const char* name = rad > 0 ? gStyleName[style] : "none";
         if (SkScalarFraction(rad) != 0) {
             fName.printf("morph_%.2f_%s", SkScalarToFloat(rad), name);
         } else {
             fName.printf("morph_%d_%s", SkScalarRoundToInt(rad), name);
         }
     }
 
 protected:
-    virtual const char* onGetName() {
+    const char* onGetName() override {
         return fName.c_str();
     }
 
-    virtual void onDraw(int loops, SkCanvas* canvas) {
+    void onDraw(int loops, SkCanvas* canvas) override {
         SkPaint paint;
         this->setupPaint(&paint);
 
         paint.setAntiAlias(true);
 
         SkRandom rand;
         for (int i = 0; i < loops; i++) {
             SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
                                       rand.nextUScalar1() * 400);
             r.offset(fRadius, fRadius);
 
             if (fRadius > 0) {
-                SkImageFilter* mf = nullptr;
+                sk_sp<SkImageFilter> mf;
                 switch (fStyle) {
                 case kDilate_MT:
-                    mf = SkDilateImageFilter::Create(SkScalarFloorToInt(fRadius),
-                                                    SkScalarFloorToInt(fRadius));
+                    mf = SkDilateImageFilter::Make(SkScalarFloorToInt(fRadius),
+                                                   SkScalarFloorToInt(fRadius),
+                                                   nullptr);
                     break;
                 case kErode_MT:
-                    mf = SkErodeImageFilter::Create(SkScalarFloorToInt(fRadius),
-                                                    SkScalarFloorToInt(fRadius));
+                    mf = SkErodeImageFilter::Make(SkScalarFloorToInt(fRadius),
+                                                  SkScalarFloorToInt(fRadius),
+                                                  nullptr);
                     break;
                 }
-                paint.setImageFilter(mf)->unref();
+                paint.setImageFilter(std::move(mf));
             }
             canvas->drawOval(r, paint);
         }
     }
 
 private:
     typedef Benchmark INHERITED;
 };
 
 DEF_BENCH( return new MorphologyBench(SMALL, kErode_MT); )
 DEF_BENCH( return new MorphologyBench(SMALL, kDilate_MT); )
 
 DEF_BENCH( return new MorphologyBench(BIG, kErode_MT); )
 DEF_BENCH( return new MorphologyBench(BIG, kDilate_MT); )
 
 DEF_BENCH( return new MorphologyBench(REAL, kErode_MT); )
 DEF_BENCH( return new MorphologyBench(REAL, kDilate_MT); )
 
 DEF_BENCH( return new MorphologyBench(0, kErode_MT); )