Set m_{width,height}AvailableToChildrenChanged when scrollbars appear

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

 /*
  * 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, 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
@@ skipping 958 matching lines @@
     TableCellPainter(*this).paintMask(paintInfo, paintOffset);
 }
 
 bool LayoutTableCell::boxShadowShouldBeAppliedToBackground(BackgroundBleedAvoidance, const InlineFlowBox*) const
 {
     return false;
 }
 
 void LayoutTableCell::scrollbarsChanged(bool horizontalScrollbarChanged, bool verticalScrollbarChanged)
 {
+    LayoutBlock::scrollbarsChanged(horizontalScrollbarChanged, verticalScrollbarChanged);
     int scrollbarHeight = scrollbarLogicalHeight();
     if (!scrollbarHeight)
         return; // Not sure if we should be doing something when a scrollbar goes away or not.
 
     // We only care if the scrollbar that affects our intrinsic padding has been added.
     if ((isHorizontalWritingMode() && !horizontalScrollbarChanged)
         || (!isHorizontalWritingMode() && !verticalScrollbarChanged))
         return;
 
     // Shrink our intrinsic padding as much as possible to accommodate the scrollbar.
@@ skipping 28 matching lines @@
 bool LayoutTableCell::backgroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect) const
 {
     // If this object has layer, the area of collapsed borders should be transparent
     // to expose the collapsed borders painted on the underlying layer.
     if (hasLayer() && table()->collapseBorders())
         return false;
     return LayoutBlockFlow::backgroundIsKnownToBeOpaqueInRect(localRect);
 }
 
 } // namespace blink