use simpler api for SkMergeImageFilter

third_party/WebKit/Source/platform/graphics/filters/FEMerge.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 28 matching lines @@
 sk_sp<SkImageFilter> FEMerge::CreateImageFilter() {
   unsigned size = NumberOfEffectInputs();
 
   std::unique_ptr<sk_sp<SkImageFilter>[]> input_refs =
       WrapArrayUnique(new sk_sp<SkImageFilter>[size]);
   for (unsigned i = 0; i < size; ++i) {
     input_refs[i] = SkiaImageFilterBuilder::Build(
         InputEffect(i), OperatingInterpolationSpace());
   }
   SkImageFilter::CropRect rect = GetCropRect();
-  return SkMergeImageFilter::MakeN(input_refs.get(), size, nullptr, &rect);
+  return SkMergeImageFilter::Make(input_refs.get(), size, &rect);
 }
 
 TextStream& FEMerge::ExternalRepresentation(TextStream& ts, int indent) const {
   WriteIndent(ts, indent);
   ts << "[feMerge";
   FilterEffect::ExternalRepresentation(ts);
   unsigned size = NumberOfEffectInputs();
   ts << " mergeNodes=\"" << size << "\"]\n";
   for (unsigned i = 0; i < size; ++i)
     InputEffect(i)->ExternalRepresentation(ts, indent + 1);
   return ts;
 }
 
 }  // namespace blink