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

Source/core/rendering/RenderInline.cpp

Index: Source/core/rendering/RenderInline.cpp
diff --git a/Source/core/rendering/RenderInline.cpp b/Source/core/rendering/RenderInline.cpp
index 280a5a89f94ad814b2969eb38bd2fffb49cd4184..8f0f4dde2fd607b942e9c793c3749d2bb120c6e2 100644
--- a/Source/core/rendering/RenderInline.cpp
+++ b/Source/core/rendering/RenderInline.cpp
@@ -1024,9 +1024,6 @@ LayoutRect RenderInline::clippedOverflowRectForRepaint(const RenderLayerModelObj
     if (hitRepaintContainer || !cb)
         return repaintRect;
 
-    if (cb->hasColumns())
-        cb->adjustRectForColumns(repaintRect);
-
     if (cb->hasOverflowClip())
         cb->applyCachedClipAndScrollOffsetForRepaint(repaintRect);
 
@@ -1080,16 +1077,6 @@ void RenderInline::computeRectForRepaint(const RenderLayerModelObject* repaintCo
 
     LayoutPoint topLeft = rect.location();
 
-    if (o->isRenderBlockFlow() && !style()->hasOutOfFlowPosition()) {
-        RenderBlock* cb = toRenderBlock(o);
-        if (cb->hasColumns()) {
-            LayoutRect repaintRect(topLeft, rect.size());
-            cb->adjustRectForColumns(repaintRect);
-            topLeft = repaintRect.location();
-            rect = repaintRect;
-        }
-    }
-
     if (style()->hasInFlowPosition() && layer()) {
         // Apply the in-flow position offset when invalidating a rectangle. The layer
         // is translated, but the render box isn't, so we need to do this to get the
@@ -1126,14 +1113,11 @@ LayoutSize RenderInline::offsetFromContainer(RenderObject* container, const Layo
     if (isInFlowPositioned())
         offset += offsetForInFlowPosition();
 
-    container->adjustForColumns(offset, point);
-
     if (container->hasOverflowClip())
         offset -= toRenderBox(container)->scrolledContentOffset();
 
     if (offsetDependsOnPoint) {
-        *offsetDependsOnPoint = container->hasColumns()
-            || (container->isBox() && container->style()->isFlippedBlocksWritingMode())
+        *offsetDependsOnPoint = (container->isBox() && container->style()->isFlippedBlocksWritingMode())
             || container->isRenderFlowThread();
     }
 
@@ -1164,7 +1148,7 @@ void RenderInline::mapLocalToContainer(const RenderLayerModelObject* repaintCont
     if (mode & ApplyContainerFlip && o->isBox()) {
         if (o->style()->isFlippedBlocksWritingMode()) {
             IntPoint centerPoint = roundedIntPoint(transformState.mappedPoint());
-            transformState.move(toRenderBox(o)->flipForWritingModeIncludingColumns(centerPoint) - centerPoint);
+            transformState.move(LayoutPoint() - centerPoint);
         }
         mode &= ~ApplyContainerFlip;
     }