*** DO NOT LAND *** Measure the size and complexity of the old multicol implementation.

Source/core/rendering/RenderObject.h

Index: Source/core/rendering/RenderObject.h
diff --git a/Source/core/rendering/RenderObject.h b/Source/core/rendering/RenderObject.h
index c0de169ae7ec0f9b7a3895708c42166f0a5e6e09..b161951bb445ce31a95938187754ff5db2c68858 100644
--- a/Source/core/rendering/RenderObject.h
+++ b/Source/core/rendering/RenderObject.h
@@ -403,8 +403,6 @@ public:
 
     bool childrenInline() const { return m_bitfields.childrenInline(); }
     void setChildrenInline(bool b) { m_bitfields.setChildrenInline(b); }
-    bool hasColumns() const { return m_bitfields.hasColumns(); }
-    void setHasColumns(bool b = true) { m_bitfields.setHasColumns(b); }
 
     bool ancestorLineBoxDirty() const { return m_bitfields.ancestorLineBoxDirty(); }
     void setAncestorLineBoxDirty(bool value = true)
@@ -496,8 +494,6 @@ public:
             && !isRenderFullScreen()
             && !isRenderFullScreenPlaceholder();
     }
-    bool isAnonymousColumnsBlock() const { return style()->specifiesColumns() && isAnonymousBlock(); }
-    bool isAnonymousColumnSpanBlock() const { return style()->columnSpan() && isAnonymousBlock(); }
     bool isElementContinuation() const { return node() && node()->renderer() != this; }
     bool isInlineElementContinuation() const { return isElementContinuation() && isInline(); }
     virtual RenderBoxModelObject* virtualContinuation() const { return 0; }
@@ -836,16 +832,6 @@ public:
     virtual void computeRectForRepaint(const RenderLayerModelObject* repaintContainer, LayoutRect&, bool fixed = false) const;
     virtual void computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect& repaintRect, bool fixed = false) const;
 
-    // If multiple-column layout results in applying an offset to the given point, add the same
-    // offset to the given size.
-    virtual void adjustForColumns(LayoutSize&, const LayoutPoint&) const { }
-    LayoutSize offsetForColumns(const LayoutPoint& point) const
-    {
-        LayoutSize offset;
-        adjustForColumns(offset, point);
-        return offset;
-    }
-
     virtual unsigned int length() const { return 1; }
 
     bool isFloatingOrOutOfFlowPositioned() const { return (isFloating() || isOutOfFlowPositioned()); }
@@ -1127,7 +1113,6 @@ private:
             , m_everHadLayout(false)
             , m_ancestorLineBoxDirty(false)
             , m_childrenInline(false)
-            , m_hasColumns(false)
             , m_layoutDidGetCalled(false)
             , m_positionedState(IsStaticallyPositioned)
             , m_selectionState(SelectionNone)
@@ -1167,7 +1152,6 @@ private:
 
         // from RenderBlock
         ADD_BOOLEAN_BITFIELD(childrenInline, ChildrenInline);
-        ADD_BOOLEAN_BITFIELD(hasColumns, HasColumns);
 
         ADD_BOOLEAN_BITFIELD(layoutDidGetCalled, LayoutDidGetCalled);