Remove column set range map from RenderFlowThread.

Source/core/rendering/RenderDeprecatedFlexibleBox.cpp

 /*
  * This file is part of the render object implementation for KHTML.
  *
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003 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
@@ skipping 266 matching lines @@
             layoutVerticalBox(relayoutChildren);
 
         LayoutUnit oldClientAfterEdge = clientLogicalBottom();
         updateLogicalHeight();
 
         if (previousSize.height() != height())
             relayoutChildren = true;
 
         layoutPositionedObjects(relayoutChildren || isDocumentElement());
 
-        computeRegionRangeForBlock(flowThreadContainingBlock());
-
         computeOverflow(oldClientAfterEdge);
     }
 
     updateLayerTransformAfterLayout();
 
     if (view()->layoutState()->pageLogicalHeight())
         setPageLogicalOffset(view()->layoutState()->pageLogicalOffset(*this, logicalTop()));
 
     // Update our scrollbars if we're overflow:auto/scroll/hidden now that we know if
     // we overflow or not.
@@ skipping 763 matching lines @@
     if (isPseudoElement())
         return "RenderDeprecatedFlexibleBox (generated)";
     if (isAnonymous())
         return "RenderDeprecatedFlexibleBox (generated)";
     if (isRelPositioned())
         return "RenderDeprecatedFlexibleBox (relative positioned)";
     return "RenderDeprecatedFlexibleBox";
 }
 
 } // namespace blink