Update MagnifierImageFilter to sk_sp

samplecode/SampleFilterFuzz.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 "SampleCode.h"
 #include "Sk1DPathEffect.h"
 #include "Sk2DPathEffect.h"
 #include "SkAlphaThresholdFilter.h"
@@ skipping 564 matching lines @@
         filter = cf ? SkColorFilterImageFilter::Make(std::move(cf), make_image_filter())
                     : nullptr;
         break;
     }
     case BLUR:
         filter = SkBlurImageFilter::Make(make_scalar(true),
                                          make_scalar(true),
                                          make_image_filter());
         break;
     case MAGNIFIER:
-        filter = sk_sp<SkImageFilter>(SkMagnifierImageFilter::Create(make_rect(), 
-                                                                     make_scalar(true)));
+        filter = SkMagnifierImageFilter::Make(make_rect(),
+                                              make_scalar(true),
+                                              make_image_filter());
         break;
     case DOWN_SAMPLE:
         filter = sk_sp<SkImageFilter>(SkDownSampleImageFilter::Create(make_scalar()));
         break;
     case XFERMODE:
         filter = SkXfermodeImageFilter::Make(SkXfermode::Make(make_xfermode()),
                                              make_image_filter(),
                                              make_image_filter(),
                                              nullptr);
         break;
@@ skipping 253 matching lines @@
     }
 
 private:
     typedef SkView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new ImageFilterFuzzView; }
 static SkViewRegister reg(MyFactory);