Remove column set range map from RenderFlowThread.

Source/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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
  * License as published by the Free Software Foundation; either
@@ skipping 1387 matching lines @@
         screenArea = viewBounds;
         screenArea.intersect(objectBounds);
     }
 
     for (Vector<ImageResource*>::iterator it = images.begin(), end = images.end(); it != end; ++it)
         ResourceLoadPriorityOptimizer::resourceLoadPriorityOptimizer()->notifyImageResourceVisibility(*it, status, screenArea);
 
     return true;
 }
 
-void RenderBlock::computeRegionRangeForBlock(RenderFlowThread* flowThread)
-{
-    if (flowThread)
-        flowThread->setRegionRangeForBox(this, offsetFromLogicalTopOfFirstPage());
-}
-
 bool RenderBlock::widthAvailableToChildrenHasChanged()
 {
     bool widthAvailableToChildrenHasChanged = m_hasBorderOrPaddingLogicalWidthChanged;
     m_hasBorderOrPaddingLogicalWidthChanged = false;
 
     // If we use border-box sizing, have percentage padding, and our parent has changed width then the width available to our children has changed even
     // though our own width has remained the same.
     widthAvailableToChildrenHasChanged |= style()->boxSizing() == BORDER_BOX && needsPreferredWidthsRecalculation() && view()->layoutState()->containingBlockLogicalWidthChanged();
 
     return widthAvailableToChildrenHasChanged;
@@ skipping 3411 matching lines @@
 void RenderBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj) const
 {
     showRenderObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace blink