[layoutng] Make sure to update m_isSelfCollapsing after ng layout

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003-2013 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ skipping 283 matching lines @@
     void simplifiedNormalFlowInlineLayout();
     bool recalcInlineChildrenOverflowAfterStyleChange();
 
     PositionWithAffinity positionForPoint(const LayoutPoint&) override;
 
     LayoutUnit lowestFloatLogicalBottom(FloatingObject::Type = FloatingObject::FloatLeftRight) const;
 
     bool hasOverhangingFloats() const { return parent() && containsFloats() && lowestFloatLogicalBottom() > logicalHeight(); }
     bool isOverhangingFloat(const FloatingObject& floatObject) const { return logicalBottomForFloat(floatObject) > logicalHeight(); }
 
+    // This function is only public so we can call it from NGBox while we're
+    // still working on LayoutNG.
+    void updateIsSelfCollapsing() { m_isSelfCollapsing = checkIfIsSelfCollapsingBlock(); }
+
 #ifndef NDEBUG
     void showLineTreeAndMark(const InlineBox* = nullptr, const char* = nullptr, const InlineBox* = nullptr, const char* = nullptr, const LayoutObject* = nullptr) const;
 #endif
 
 protected:
     void rebuildFloatsFromIntruding();
     void layoutInlineChildren(bool relayoutChildren, LayoutUnit afterEdge);
     void addLowestFloatFromChildren(LayoutBlockFlow*);
 
     void createFloatingObjects();
@@ skipping 345 matching lines @@
 
 // END METHODS DEFINED IN LayoutBlockFlowLine
 
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBlockFlow, isLayoutBlockFlow());
 
 } // namespace blink
 
 #endif // LayoutBlockFlow_h