Implement mapAncestorToLocal for LayoutSVG{ModelObject,Block}

third_party/WebKit/Source/core/layout/svg/LayoutSVGBlock.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 15 matching lines @@
 
 class SVGElement;
 
 class LayoutSVGBlock : public LayoutBlockFlow {
 public:
     explicit LayoutSVGBlock(SVGElement*);
 
     LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* = nullptr) const final;
 
     void mapLocalToAncestor(const LayoutBoxModelObject* ancestor, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = nullptr, const PaintInvalidationState* = nullptr) const final;
+    void mapAncestorToLocal(const LayoutBoxModelObject* ancestor, TransformState&, MapCoordinatesFlags = ApplyContainerFlip) const final;
     const LayoutObject* pushMappingToContainer(const LayoutBoxModelObject* ancestorToStopAt, LayoutGeometryMap&) const final;
 
     AffineTransform localTransform() const final { return m_localTransform; }
 
     PaintLayerType layerTypeRequired() const final { return NoPaintLayer; }
 
     void invalidateTreeIfNeeded(PaintInvalidationState&) override;
 
 protected:
     void willBeDestroyed() override;
     void mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect&, const PaintInvalidationState*) const final;
 
     AffineTransform m_localTransform;
 
     bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectSVG || LayoutBlockFlow::isOfType(type); }
 private:
     void updateFromStyle() final;
 
     void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const final;
 
     void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) final;
 
     bool nodeAtPoint(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
 };
 
 } // namespace blink
 #endif // LayoutSVGBlock_h