Paint multicol from LayoutNG

third_party/WebKit/Source/core/layout/LayoutBlockFlow.h

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
index ecc82710c737c1dde65884cbf6f5d4460d93076d..2fdb85ccf6c60df67b5d94a86657177be784a846 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
@@ -723,6 +723,8 @@ class CORE_EXPORT LayoutBlockFlow : public LayoutBlock {
   static void updateAncestorShouldPaintFloatingObject(
       const LayoutBox& floatBox);
 
+  LayoutBlockFlowRareData& ensureRareData();
+
  protected:
   LayoutUnit maxPositiveMarginBefore() const {
     return m_rareData
@@ -851,7 +853,6 @@ class CORE_EXPORT LayoutBlockFlow : public LayoutBlock {
                             // flow.  For example, <div>Hello<br>world.</div>
                             // will have two total lines for the <div>.
 
-  LayoutBlockFlowRareData& ensureRareData();
 
   bool isSelfCollapsingBlock() const override;
   bool checkIfIsSelfCollapsingBlock() const;