Cleanup: Replace adjustForColumns() / offsetForColumns() with columnOffset().

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 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
@@ skipping 833 matching lines @@
     }
     IntRect pixelSnappedAbsoluteClippedOverflowRect() const;
     virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const;
     virtual LayoutRect rectWithOutlineForRepaint(const RenderLayerModelObject* repaintContainer, LayoutUnit outlineWidth) const;
 
     // Given a rect in the object's coordinate space, compute a rect suitable for repainting
     // that rect in the coordinate space of repaintContainer.
     virtual void computeRectForRepaint(const RenderLayerModelObject* repaintContainer, LayoutRect&, bool fixed = false) const;
     virtual void computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect& repaintRect, bool fixed = false) const;
 
-    // If multiple-column layout results in applying an offset to the given point, add the same
-    // offset to the given size.
-    virtual void adjustForColumns(LayoutSize&, const LayoutPoint&) const { }
-    LayoutSize offsetForColumns(const LayoutPoint& point) const
-    {
-        LayoutSize offset;
-        adjustForColumns(offset, point);
-        return offset;
-    }
+    // Return the offset to the column in which the specified point (in flow-thread coordinates)
+    // lives. This is used to convert a flow-thread point to a visual point.
+    virtual LayoutSize columnOffset(const LayoutPoint&) const { return LayoutSize(); }
 
     virtual unsigned length() const { return 1; }
 
     bool isFloatingOrOutOfFlowPositioned() const { return (isFloating() || isOutOfFlowPositioned()); }
 
     bool isTransparent() const { return style()->opacity() < 1.0f; }
     float opacity() const { return style()->opacity(); }
 
     bool hasReflection() const { return m_bitfields.hasReflection(); }
 
@@ skipping 581 matching lines @@
 void showTree(const WebCore::RenderObject*);
 void showLineTree(const WebCore::RenderObject*);
 void showRenderTree(const WebCore::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h