switch colorfilters to sk_sp

gm/dropshadowimagefilter.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 "gm.h"
 #include "SkColorFilter.h"
 
@@ skipping 75 matching lines @@
         paint.setStyle(SkPaint::kStroke_Style);
         paint.setColor(SK_ColorRED);
         canvas->drawRect(r, paint);
     }
 
     virtual void onDraw(SkCanvas* canvas) {
         void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = {
             draw_bitmap, draw_path, draw_paint, draw_text
         };
 
-        SkAutoTUnref<SkColorFilter> cf(
-            SkColorFilter::CreateModeFilter(SK_ColorMAGENTA, SkXfermode::kSrcIn_Mode));
+        auto cf(SkColorFilter::MakeModeFilter(SK_ColorMAGENTA, SkXfermode::kSrcIn_Mode));
         SkAutoTUnref<SkImageFilter> cfif(SkColorFilterImageFilter::Create(cf.get()));
         SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)),
                                          SkImageFilter::CropRect::kHasAll_CropEdge);
         SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)),
                                           SkImageFilter::CropRect::kHasAll_CropEdge);
 
         SkImageFilter* filters[] = {
             nullptr,
             SkDropShadowImageFilter::Create(7.0f, 0.0f, 0.0f, 3.0f, SK_ColorBLUE,
                 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
@@ skipping 32 matching lines @@
         }
     }
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new DropShadowImageFilterGM; )