Remove the old multicol implementation.

Source/core/layout/LayoutInline.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 1083 matching lines @@
     if (paintInvalidationContainer == this)
         return;
 
     bool containerSkipped;
     LayoutObject* o = container(paintInvalidationContainer, &containerSkipped);
     if (!o)
         return;
 
     LayoutPoint topLeft = rect.location();
 
-    if (o->isLayoutBlockFlow() && !style()->hasOutOfFlowPosition()) {
-        LayoutBlock* cb = toLayoutBlock(o);
-        if (cb->hasColumns()) {
-            LayoutRect paintInvalidationRect(topLeft, rect.size());
-            cb->adjustRectForColumns(paintInvalidationRect);
-            topLeft = paintInvalidationRect.location();
-            rect = paintInvalidationRect;
-        }
-    }
-
     if (style()->hasInFlowPosition() && layer()) {
         // Apply the in-flow position offset when invalidating a rectangle. The layer
         // is translated, but the layout box isn't, so we need to do this to get the
         // right dirty rect. Since this is called from LayoutObject::setStyle, the relative position
         // flag on the LayoutObject has been cleared, so use the one on the style().
         topLeft += layer()->offsetForInFlowPosition();
     }
 
     // FIXME: We ignore the lightweight clipping rect that controls use, since if |o| is in mid-layout,
     // its controlClipRect will be wrong. For overflow clip we use the values cached by the layer.
@@ skipping 21 matching lines @@
 
     LayoutSize offset;
     if (isRelPositioned())
         offset += offsetForInFlowPosition();
 
     offset += container->columnOffset(point);
 
     if (container->hasOverflowClip())
         offset -= toLayoutBox(container)->scrolledContentOffset();
 
-    if (offsetDependsOnPoint) {
-        *offsetDependsOnPoint = container->hasColumns()
-            || (container->isBox() && container->style()->isFlippedBlocksWritingMode())
-            || container->isLayoutFlowThread();
-    }
+    if (offsetDependsOnPoint)
+        *offsetDependsOnPoint = (container->isBox() && container->style()->isFlippedBlocksWritingMode()) || container->isLayoutFlowThread();
 
     return offset;
 }
 
 void LayoutInline::mapLocalToContainer(const LayoutBoxModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const
 {
     if (paintInvalidationContainer == this)
         return;
 
     if (paintInvalidationState && paintInvalidationState->canMapToContainer(paintInvalidationContainer)) {
         LayoutSize offset = paintInvalidationState->paintOffset();
         if (style()->hasInFlowPosition() && layer())
             offset += layer()->offsetForInFlowPosition();
         transformState.move(offset);
         return;
     }
 
     bool containerSkipped;
     LayoutObject* o = container(paintInvalidationContainer, &containerSkipped);
     if (!o)
         return;
 
     if (mode & ApplyContainerFlip && o->isBox()) {
         if (o->style()->isFlippedBlocksWritingMode()) {
             IntPoint centerPoint = roundedIntPoint(transformState.mappedPoint());
-            transformState.move(toLayoutBox(o)->flipForWritingModeIncludingColumns(centerPoint) - centerPoint);
+            transformState.move(toLayoutBox(o)->flipForWritingMode(LayoutPoint(centerPoint)) - centerPoint);
         }
         mode &= ~ApplyContainerFlip;
     }
 
     LayoutSize containerOffset = offsetFromContainer(o, roundedLayoutPoint(transformState.mappedPoint()));
 
     bool preserve3D = mode & UseTransforms && (o->style()->preserves3D() || style()->preserves3D());
     if (mode & UseTransforms && shouldUseTransformFromContainer(o)) {
         TransformationMatrix t;
         getTransformFromContainer(o, containerOffset, t);
@@ skipping 248 matching lines @@
 }
 
 void LayoutInline::invalidateDisplayItemClients(const LayoutBoxModelObject& paintInvalidationContainer) const
 {
     LayoutBoxModelObject::invalidateDisplayItemClients(paintInvalidationContainer);
     for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
         paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box);
 }
 
 } // namespace blink