Move feConvolveMatrix error handling to FEConvolveMatrix

third_party/WebKit/Source/platform/graphics/filters/FilterEffect.h

 /*
  * Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * 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 131 matching lines @@
     // Return false if the filter will only operate correctly on valid RGBA values, with
     // alpha in [0,255] and each color component in [0, alpha].
     virtual bool mayProduceInvalidPreMultipliedPixels() { return false; }
 
     SkImageFilter* getImageFilter(ColorSpace, bool requiresPMColorValidation) const;
     void setImageFilter(ColorSpace, bool requiresPMColorValidation, PassRefPtr<SkImageFilter>);
 
 protected:
     FilterEffect(Filter*);
 
+    PassRefPtr<SkImageFilter> createTransparentBlack() const;
+
     Color adaptColorToOperatingColorSpace(const Color& deviceColor);
 
     SkImageFilter::CropRect getCropRect(const FloatSize& cropOffset) const;
 
     void addAbsolutePaintRect(const FloatRect& absolutePaintRect);
 
 private:
     bool hasConnectedInput() const;
 
     FilterEffectVector m_inputEffects;
@@ skipping 24 matching lines @@
     bool m_clipsToBounds;
 
     ColorSpace m_operatingColorSpace;
 
     RefPtr<SkImageFilter> m_imageFilters[4];
 };
 
 } // namespace blink
 
 #endif // FilterEffect_h