Drop some dead code from FilterEffect

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 48 matching lines @@
 };
 
 typedef int DetermineSubregionFlags;
 
 class PLATFORM_EXPORT FilterEffect : public RefCountedWillBeGarbageCollectedFinalized<FilterEffect> {
 public:
     virtual ~FilterEffect();
     DECLARE_VIRTUAL_TRACE();
 
     void clearResult();
-    void clearResultsRecursive();
 
     FilterEffectVector& inputEffects() { return m_inputEffects; }
     FilterEffect* inputEffect(unsigned) const;
     unsigned numberOfEffectInputs() const { return m_inputEffects.size(); }
 
     inline bool hasImageFilter() const
     {
         return m_imageFilters[0] || m_imageFilters[1] || m_imageFilters[2] || m_imageFilters[3];
     }
 
-    // Solid black image with different alpha values.
-    bool isAlphaImage() const { return m_alphaImage; }
-    void setIsAlphaImage(bool alphaImage) { m_alphaImage = alphaImage; }
-
     IntRect absolutePaintRect() const { return m_absolutePaintRect; }
 
     FloatRect maxEffectRect() const { return m_maxEffectRect; }
     void setMaxEffectRect(const FloatRect& maxEffectRect) { m_maxEffectRect = maxEffectRect; }
 
     virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*);
     virtual PassRefPtr<SkImageFilter> createImageFilterWithoutValidation(SkiaImageFilterBuilder*);
 
     // Mapping a rect forwards determines which which destination pixels a
     // given source rect would affect. Mapping a rect backwards determines
     // which pixels from the source rect would be required to fill a given
     // destination rect. Note that these are not necessarily the inverse of
     // each other. For example, for FEGaussianBlur, they are the same
     // transformation.
     virtual FloatRect mapRect(const FloatRect& rect, bool forward = true) { return rect; }
     // A version of the above that is used for calculating paint rects. We can't
     // use mapRect above for that, because that is also used for calculating effect
     // regions for CSS filters and has undesirable effects for tile and
     // displacement map.
     virtual FloatRect mapPaintRect(const FloatRect& rect, bool forward)
     {
         return mapRect(rect, forward);
     }
     FloatRect mapRectRecursive(const FloatRect&);
 
-    // This is a recursive version of a backwards mapRect(), which also takes
-    // into account the filter primitive subregion of each effect.
-    // Note: This works in absolute coordinates!
-    FloatRect getSourceRect(const FloatRect& destRect, const FloatRect& clipRect);
-
     virtual FilterEffectType filterEffectType() const { return FilterEffectTypeUnknown; }
 
     virtual TextStream& externalRepresentation(TextStream&, int indention = 0) const;
 
     // The following functions are SVG specific and will move to LayoutSVGResourceFilterPrimitive.
     // See bug https://bugs.webkit.org/show_bug.cgi?id=45614.
     bool hasX() const { return m_hasX; }
     void setHasX(bool value) { m_hasX = value; }
 
     bool hasY() const { return m_hasY; }
@@ skipping 12 matching lines @@
     void setEffectBoundaries(const FloatRect& effectBoundaries) { m_effectBoundaries = effectBoundaries; }
 
     Filter* filter() { return m_filter; }
     const Filter* filter() const { return m_filter; }
 
     bool clipsToBounds() const { return m_clipsToBounds; }
     void setClipsToBounds(bool value) { m_clipsToBounds = value; }
 
     ColorSpace operatingColorSpace() const { return m_operatingColorSpace; }
     virtual void setOperatingColorSpace(ColorSpace colorSpace) { m_operatingColorSpace = colorSpace; }
-    ColorSpace resultColorSpace() const { return m_resultColorSpace; }
-    virtual void setResultColorSpace(ColorSpace colorSpace) { m_resultColorSpace = colorSpace; }
 
     FloatRect determineFilterPrimitiveSubregion(DetermineSubregionFlags = DetermineSubregionNone);
-    void determineAllAbsolutePaintRects();
 
     virtual FloatRect determineAbsolutePaintRect(const FloatRect& requestedAbsoluteRect);
     virtual bool affectsTransparentPixels() { return false; }
 
     // 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*);
 
     Color adaptColorToOperatingColorSpace(const Color& deviceColor);
 
     SkImageFilter::CropRect getCropRect(const FloatSize& cropOffset) const;
 
     void addAbsolutePaintRect(const FloatRect& absolutePaintRect);
 
 private:
     FilterEffectVector m_inputEffects;
 
-    bool m_alphaImage;
-
     IntRect m_absolutePaintRect;
 
     // The maximum size of a filter primitive. In SVG this is the primitive subregion in absolute coordinate space.
     // The absolute paint rect should never be bigger than m_maxEffectRect.
     FloatRect m_maxEffectRect;
     RawPtrWillBeMember<Filter> m_filter;
 
     // The following member variables are SVG specific and will move to LayoutSVGResourceFilterPrimitive.
     // See bug https://bugs.webkit.org/show_bug.cgi?id=45614.
 
     // The subregion of a filter primitive according to the SVG Filter specification in local coordinates.
     // This is SVG specific and needs to move to LayoutSVGResourceFilterPrimitive.
     FloatRect m_filterPrimitiveSubregion;
 
     // x, y, width and height of the actual SVGFE*Element. Is needed to determine the subregion of the
     // filter primitive on a later step.
     FloatRect m_effectBoundaries;
     bool m_hasX;
     bool m_hasY;
     bool m_hasWidth;
     bool m_hasHeight;
 
     // Should the effect clip to its primitive region, or expand to use the combined region of its inputs.
     bool m_clipsToBounds;
 
     ColorSpace m_operatingColorSpace;
-    ColorSpace m_resultColorSpace;
 
     RefPtr<SkImageFilter> m_imageFilters[4];
 };
 
 } // namespace blink
 
 #endif // FilterEffect_h