switch colorfilters to sk_sp

gm/emboss.cpp

 /*
  * Copyright 2014 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 "SkBlurMaskFilter.h"
 #include "SkCanvas.h"
@@ skipping 31 matching lines @@
         SkBitmap bm = make_bm();
         canvas->drawBitmap(bm, 10, 10, &paint);
 
         const SkScalar dir[] = { 1, 1, 1 };
         paint.setMaskFilter(SkBlurMaskFilter::CreateEmboss(3, dir, 0.3f, 0.1f))->unref();
         canvas->translate(bm.width() + SkIntToScalar(10), 0);
         canvas->drawBitmap(bm, 10, 10, &paint);
 
         // this combination of emboss+colorfilter used to crash -- so we exercise it to
         // confirm that we have a fix.
-        paint.setColorFilter(SkColorFilter::CreateModeFilter(0xFFFF0000, SkXfermode::kSrcATop_Mode))->unref();
+        paint.setColorFilter(SkColorFilter::MakeModeFilter(0xFFFF0000, SkXfermode::kSrcATop_Mode));
         canvas->translate(bm.width() + SkIntToScalar(10), 0);
         canvas->drawBitmap(bm, 10, 10, &paint);
     }
 
 private:
     typedef skiagm::GM INHERITED;
 };
 
 DEF_GM(return new EmbossGM;)