Update DropShadowImageFilter to sk_sp

fuzz/FilterFuzz.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "Fuzz.h"
 #include "Sk1DPathEffect.h"
 #include "Sk2DPathEffect.h"
 #include "SkAlphaThresholdFilter.h"
@@ skipping 662 matching lines @@
                 make_scalar(true), make_scalar(true), R(10.0f), make_scalar()) :
             SkPerlinNoiseShader::MakeTurbulence(
                 make_scalar(true), make_scalar(true), R(10.0f), make_scalar()));
         SkPaint paint;
         paint.setShader(shader);
         SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
                                                      SkIntToScalar(kBitmapSize)));
         filter = SkPaintImageFilter::Make(paint, &cropR);
         break;
     }
-    case DROP_SHADOW: {
-        sk_sp<SkImageFilter> subFilter(make_image_filter());
-
-        filter = sk_sp<SkImageFilter>(SkDropShadowImageFilter::Create(make_scalar(),
-                                                                      make_scalar(),
-                                                                      make_scalar(true),
-                                                                      make_scalar(true),
-                                                                      make_color(),
-                                                                      make_shadow_mode(),
-                                                                      subFilter.get(),
-                                                                      nullptr));
+    case DROP_SHADOW:
+        filter = SkDropShadowImageFilter::Make(make_scalar(),
+                                               make_scalar(),
+                                               make_scalar(true),
+                                               make_scalar(true),
+                                               make_color(),
+                                               make_shadow_mode(),
+                                               make_image_filter(),
+                                               nullptr);
         break;
-    }
     case MORPHOLOGY:
         if (R(2) == 1) {
             filter = SkDilateImageFilter::Make(R(static_cast<float>(kBitmapSize)),
                                                R(static_cast<float>(kBitmapSize)),
                                                make_image_filter());
         } else {
             filter = SkErodeImageFilter::Make(R(static_cast<float>(kBitmapSize)),
                                               R(static_cast<float>(kBitmapSize)),
                                               make_image_filter());
         }
@@ skipping 94 matching lines @@
 DEF_FUZZ(SerializedImageFilter, f) {
     fuzz = f;
     SkImageFilter* filter = make_serialized_image_filter();
 
     SkPaint paint;
     SkSafeUnref(paint.setImageFilter(filter));
     SkBitmap bitmap;
     SkCanvas canvas(bitmap);
     drawClippedBitmap(&canvas, 0, 0, paint);
 }