Refactor m_absoluteTransform out of SVGFilter and into base class.

Source/core/svg/graphics/filters/SVGFilter.h

Index: Source/core/svg/graphics/filters/SVGFilter.h
diff --git a/Source/core/svg/graphics/filters/SVGFilter.h b/Source/core/svg/graphics/filters/SVGFilter.h
index c65f809380dea96620e829281a9387559054fe34..0b10c32596a1db404a051fb8ce044668974b3cdf 100644
--- a/Source/core/svg/graphics/filters/SVGFilter.h
+++ b/Source/core/svg/graphics/filters/SVGFilter.h
@@ -40,9 +40,6 @@ public:
     FloatRect filterRegionInUserSpace() const { return m_filterRegion; }
     virtual FloatRect filterRegion() const { return m_absoluteFilterRegion; }
 
-    virtual FloatPoint mapAbsolutePointToLocalPoint(const FloatPoint& point) const { return m_absoluteTransform.inverse().mapPoint(point); }
-    const AffineTransform& absoluteTransform() const { return m_absoluteTransform; }
-
     virtual float applyHorizontalScale(float value) const;
     virtual float applyVerticalScale(float value) const;
 
@@ -52,7 +49,6 @@ public:
 private:
     SVGFilter(const AffineTransform& absoluteTransform, const FloatRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode);
 
-    AffineTransform m_absoluteTransform;
     FloatRect m_absoluteSourceDrawingRegion;
     FloatRect m_targetBoundingBox;
     FloatRect m_absoluteFilterRegion;