Remove column set range map from RenderFlowThread.

Source/core/rendering/RenderFlowThread.h

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 76 matching lines @@
 
     virtual void setPageBreak(LayoutUnit /*offset*/, LayoutUnit /*spaceShortage*/) { }
     virtual void updateMinimumPageHeight(LayoutUnit /*offset*/, LayoutUnit /*minHeight*/) { }
 
     bool regionsHaveUniformLogicalHeight() const { return m_regionsHaveUniformLogicalHeight; }
 
     // FIXME: These 2 functions should return a RenderMultiColumnSet.
     RenderRegion* firstRegion() const;
     RenderRegion* lastRegion() const;
 
-    void setRegionRangeForBox(const RenderBox*, LayoutUnit offsetFromLogicalTopOfFirstPage);
-
     virtual bool addForcedRegionBreak(LayoutUnit, RenderObject* breakChild, bool isBefore, LayoutUnit* offsetBreakAdjustment = 0) { return false; }
 
     virtual bool isPageLogicalHeightKnown() const { return true; }
     bool pageLogicalSizeChanged() const { return m_pageLogicalSizeChanged; }
 
     void collectLayerFragments(LayerFragments&, const LayoutRect& layerBoundingBox, const LayoutRect& dirtyRect);
     LayoutRect fragmentsBoundingBox(const LayoutRect& layerBoundingBox);
 
     void pushFlowThreadLayoutState(const RenderObject&);
     void popFlowThreadLayoutState();
     LayoutUnit offsetFromLogicalTopOfFirstRegion(const RenderBlock*) const;
 
     // Used to estimate the maximum height of the flow thread.
     static LayoutUnit maxLogicalHeight() { return LayoutUnit::max() / 2; }
 
 protected:
     virtual const char* renderName() const = 0;
 
     void updateRegionsFlowThreadPortionRect();
     bool shouldIssuePaintInvalidations(const LayoutRect&) const;
 
-    void getRegionRangeForBox(const RenderBox*, RenderMultiColumnSet*& startColumnSet, RenderMultiColumnSet*& endColumnSet) const;
-
     virtual RenderMultiColumnSet* columnSetAtBlockOffset(LayoutUnit) const = 0;
 
     bool cachedOffsetFromLogicalTopOfFirstRegion(const RenderBox*, LayoutUnit&) const;
     void setOffsetFromLogicalTopOfFirstRegion(const RenderBox*, LayoutUnit);
     void clearOffsetFromLogicalTopOfFirstRegion(const RenderBox*);
 
     const RenderBox* currentStatePusherRenderBox() const;
 
     RenderMultiColumnSetList m_multiColumnSetList;
 
@@ skipping 38 matching lines @@
         const LayoutUnit& highValue() const { return m_offset; }
         void collectIfNeeded(const MultiColumnSetInterval&);
 
         RenderRegion* result() const { return m_result; }
 
     private:
         LayoutUnit m_offset;
         RenderRegion* m_result;
     };
 
-    // A maps from RenderBox
-    typedef HashMap<const RenderBox*, RenderMultiColumnSetRange> RenderMultiColumnSetRangeMap;
-    RenderMultiColumnSetRangeMap m_multiColumnSetRangeMap;
-
     // Stack of objects that pushed a LayoutState object on the RenderView. The
     // objects on the stack are the ones that are curently in the process of being
     // laid out.
     ListHashSet<const RenderObject*> m_statePusherObjectsStack;
     typedef HashMap<const RenderBox*, LayoutUnit> RenderBoxToOffsetMap;
     RenderBoxToOffsetMap m_boxesToOffsetMap;
 
     MultiColumnSetIntervalTree m_multiColumnSetIntervalTree;
 
     bool m_regionsInvalidated : 1;
@@ skipping 20 matching lines @@
 };
 
 template <> struct ValueToString<RenderMultiColumnSet*> {
     static String string(const RenderMultiColumnSet* value) { return String::format("%p", value); }
 };
 #endif
 
 } // namespace blink
 
 #endif // RenderFlowThread_h