Paint backgrounds of a table section/row in one display item

third_party/WebKit/Source/core/layout/LayoutTable.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, 2009, 2010 Apple Inc.
  *               All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 355 matching lines @@
     LayoutTableCol* innermostColOrColGroup() { return col ? col : colgroup; }
   };
   ColAndColGroup colElementAtAbsoluteColumn(
       unsigned absoluteColumnIndex) const {
     // The common case is to not have col/colgroup elements, make that case
     // fast.
     if (!m_hasColElements)
       return ColAndColGroup();
     return slowColElementAtAbsoluteColumn(absoluteColumnIndex);
   }
+  bool hasColElements() const { return m_hasColElements; }
 
   bool needsSectionRecalc() const { return m_needsSectionRecalc; }
   void setNeedsSectionRecalc() {
     if (documentBeingDestroyed())
       return;
     // For all we know, sections may have been deleted at this point. Don't
     // keep pointers dangling around.
     m_head = nullptr;
     m_foot = nullptr;
     m_firstBody = nullptr;
@@ skipping 226 matching lines @@
   if (m_firstBody)
     return m_firstBody;
   return m_foot;
 }
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTable, isTable());
 
 }  // namespace blink
 
 #endif  // LayoutTable_h