Untangle multicol coordinate space conversion from offsetFromContainer().

third_party/WebKit/Source/core/layout/LayoutTableCell.h

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2013 Apple 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
@@ skipping 272 matching lines @@
 
     void willBeRemovedFromTree() override;
 
     void updateLogicalWidth() override;
 
     void paintBoxDecorationBackground(const PaintInfo&, const LayoutPoint&) const override;
     void paintMask(const PaintInfo&, const LayoutPoint&) const override;
 
     bool boxShadowShouldBeAppliedToBackground(BackgroundBleedAvoidance, const InlineFlowBox*) const override;
 
-    LayoutSize offsetFromContainer(const LayoutObject*, const LayoutPoint&, bool* offsetDependsOnPoint = nullptr) const override;
+    LayoutSize offsetFromContainer(const LayoutObject*) const override;
     LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* = nullptr) const override;
     void mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect&, const PaintInvalidationState*) const override;
 
     int borderHalfLeft(bool outer) const;
     int borderHalfRight(bool outer) const;
     int borderHalfTop(bool outer) const;
     int borderHalfBottom(bool outer) const;
 
     int borderHalfStart(bool outer) const;
     int borderHalfEnd(bool outer) const;
@@ skipping 75 matching lines @@
 
 inline LayoutTableCell* LayoutTableRow::lastCell() const
 {
     ASSERT(children() == virtualChildren());
     return toLayoutTableCell(children()->lastChild());
 }
 
 } // namespace blink
 
 #endif // LayoutTableCell_h