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

Source/core/rendering/RenderBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. 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 1859 matching lines @@
         offset += offsetForInFlowPosition();
 
     if (!isInline() || isReplaced()) {
         if (!style()->hasOutOfFlowPosition() && o->hasColumns()) {
             RenderBlock* block = toRenderBlock(o);
             LayoutRect columnRect(frameRect());
             block->adjustStartEdgeForWritingModeIncludingColumns(columnRect);
             offset += toSize(columnRect.location());
             LayoutPoint columnPoint = block->flipForWritingModeIncludingColumns(point + offset);
             offset = toLayoutSize(block->flipForWritingModeIncludingColumns(toLayoutPoint(offset)));
-            o->adjustForColumns(offset, columnPoint);
+            offset += o->columnOffset(columnPoint);
             offset = block->flipForWritingMode(offset);
 
             if (offsetDependsOnPoint)
                 *offsetDependsOnPoint = true;
         } else
             offset += topLeftLocationOffset();
     }
 
     if (o->hasOverflowClip())
         offset -= toRenderBox(o)->scrolledContentOffset();
@@ skipping 2764 matching lines @@
         return 0;
 
     if (!layoutState && !flowThreadContainingBlock())
         return 0;
 
     RenderBlock* containerBlock = containingBlock();
     return containerBlock->offsetFromLogicalTopOfFirstPage() + logicalTop();
 }
 
 } // namespace WebCore