Avoid overflow recalc on tables if sections need rebuild

third_party/WebKit/Source/core/layout/LayoutTable.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, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 401 matching lines @@
         section->updateLayerTransformAfterLayout();
         section->addVisualEffectOverflow();
     }
 }
 
 bool LayoutTable::recalcChildOverflowAfterStyleChange()
 {
     ASSERT(childNeedsOverflowRecalcAfterStyleChange());
     clearChildNeedsOverflowRecalcAfterStyleChange();
 
-    // If the table needs layout the sections we keep pointers to may have gone away and
+    // If the table sections we keep pointers to have gone away then the table will be rebuilt and
     // overflow will get recalculated anyway so return early.
-    if (needsLayout())
+    if (needsSectionRecalc())
         return false;
 
     bool childrenOverflowChanged = false;
     for (LayoutTableSection* section = topSection(); section; section = sectionBelow(section)) {
         if (!section->childNeedsOverflowRecalcAfterStyleChange())
             continue;
         childrenOverflowChanged |= section->recalcChildOverflowAfterStyleChange();
     }
     return childrenOverflowChanged;
 }
@@ skipping 1045 matching lines @@
 
 LayoutUnit LayoutTable::paddingRight() const
 {
     if (collapseBorders())
         return LayoutUnit();
 
     return LayoutBlock::paddingRight();
 }
 
 } // namespace blink