Call scrollbarsChanged in PLSA::updateAfterStyleChange.

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

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2013 Apple Inc.
  *               All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 209 matching lines @@
   // FIXME: For now we just assume the cell has the same block flow direction as
   // the table. It's likely we'll create an extra anonymous LayoutBlock to
   // handle mixing directionality anyway, in which case we can lock the block
   // flow directionality of the cells to the table's directionality.
   LayoutUnit paddingBefore() const override;
   LayoutUnit paddingAfter() const override;
 
   void setOverrideLogicalContentHeightFromRowHeight(LayoutUnit);
 
   void scrollbarsChanged(bool horizontalScrollbarChanged,
-                         bool verticalScrollbarChanged) override;
+                         bool verticalScrollbarChanged,
+                         ScrollbarChangeContext = Layout) override;
 
   bool cellWidthChanged() const { return m_cellWidthChanged; }
   void setCellWidthChanged(bool b = true) { m_cellWidthChanged = b; }
 
   static LayoutTableCell* createAnonymous(Document*);
   static LayoutTableCell* createAnonymousWithParent(const LayoutObject*);
   LayoutBox* createAnonymousBoxWithSameTypeAs(
       const LayoutObject* parent) const override {
     return createAnonymousWithParent(parent);
   }
@@ skipping 225 matching lines @@
   return toLayoutTableCell(firstChild());
 }
 
 inline LayoutTableCell* LayoutTableRow::lastCell() const {
   return toLayoutTableCell(lastChild());
 }
 
 }  // namespace blink
 
 #endif  // LayoutTableCell_h