[New Multicolumn] Cleanup: Remove redundant members.

Source/core/rendering/RenderBlockFlow.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 167 matching lines @@
     setLogicalTopForChild(flowThread, borderBefore() + paddingBefore());
     flowThread->layoutColumns(relayoutChildren, layoutScope);
     determineLogicalLeftPositionForChild(flowThread);
     return flowThread;
 }
 
 bool RenderBlockFlow::updateLogicalWidthAndColumnWidth()
 {
     bool relayoutChildren = RenderBlock::updateLogicalWidthAndColumnWidth();
     if (RenderMultiColumnFlowThread* flowThread = multiColumnFlowThread()) {
-        if (flowThread->computeColumnCountAndWidth())
+        if (flowThread->needsNewWidth())
             return true;
     }
     return relayoutChildren;
 }
 
 void RenderBlockFlow::checkForPaginationLogicalHeightChange(LayoutUnit& pageLogicalHeight, bool& pageLogicalHeightChanged, bool& hasSpecifiedPageLogicalHeight)
 {
     if (RenderMultiColumnFlowThread* flowThread = multiColumnFlowThread()) {
         LogicalExtentComputedValues computedValues;
         computeLogicalHeight(LayoutUnit(), logicalTop(), computedValues);
@@ skipping 2603 matching lines @@
 RenderBlockFlow::RenderBlockFlowRareData& RenderBlockFlow::ensureRareData()
 {
     if (m_rareData)
         return *m_rareData;
 
     m_rareData = adoptPtr(new RenderBlockFlowRareData(this));
     return *m_rareData;
 }
 
 } // namespace WebCore