Update DropShadowImageFilter to sk_sp

gm/imagefiltersstroked.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "sk_tool_utils.h"
 #include "SkBlurImageFilter.h"
 #include "SkColor.h"
@@ skipping 41 matching lines @@
             draw_line, draw_rect, draw_circle,
         };
 
         canvas->clear(SK_ColorBLACK);
 
         SkMatrix resizeMatrix;
         resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y);
 
         sk_sp<SkImageFilter> filters[] = {
             SkBlurImageFilter::Make(5, 5, nullptr),
-            sk_sp<SkImageFilter>(SkDropShadowImageFilter::Create(10, 10, 3, 3, SK_ColorGREEN,
-                            SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode)),
+            SkDropShadowImageFilter::Make(10, 10, 3, 3, SK_ColorGREEN,
+                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
+                nullptr),
             SkOffsetImageFilter::Make(-16, 32, nullptr),
             SkImageFilter::MakeMatrixFilter(resizeMatrix, kNone_SkFilterQuality, nullptr),
         };
 
         SkRect r = SkRect::MakeWH(64, 64);
         SkScalar margin = 32;
         SkPaint paint;
         paint.setColor(SK_ColorWHITE);
         paint.setAntiAlias(true);
         paint.setStrokeWidth(10);
@@ skipping 25 matching lines @@
 
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new ImageFiltersStrokedGM;)
 
 }