Remove -webkit-column-progression and -webkit-column-axis properties.

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 4216 matching lines @@
         bool hasTopOverflow = !style()->isLeftToRightDirection() && !isHorizontalWritingMode();
         bool hasLeftOverflow = !style()->isLeftToRightDirection() && isHorizontalWritingMode();
         if (isFlexibleBox() && style()->isReverseFlexDirection()) {
             RenderFlexibleBox* flexibleBox = toRenderFlexibleBox(this);
             if (flexibleBox->isHorizontalFlow())
                 hasLeftOverflow = true;
             else
                 hasTopOverflow = true;
         }
 
-        if (hasColumns() && style()->columnProgression() == ReverseColumnProgression) {
-            if (isHorizontalWritingMode() ^ !style()->hasInlineColumnAxis())
-                hasLeftOverflow = !hasLeftOverflow;
-            else
-                hasTopOverflow = !hasTopOverflow;
-        }
-
         if (!hasTopOverflow)
             overflowRect.shiftYEdgeTo(max(overflowRect.y(), clientBox.y()));
         else
             overflowRect.shiftMaxYEdgeTo(min(overflowRect.maxY(), clientBox.maxY()));
         if (!hasLeftOverflow)
             overflowRect.shiftXEdgeTo(max(overflowRect.x(), clientBox.x()));
         else
             overflowRect.shiftMaxXEdgeTo(min(overflowRect.maxX(), clientBox.maxX()));
 
         // Now re-test with the adjusted rectangle and see if it has become unreachable or fully
@@ skipping 436 matching lines @@
         return 0;
 
     if (!layoutState && !flowThreadContainingBlock())
         return 0;
 
     RenderBlock* containerBlock = containingBlock();
     return containerBlock->offsetFromLogicalTopOfFirstPage() + logicalTop();
 }
 
 } // namespace WebCore