WTF::notFound looks too much like a local variable.

Source/core/rendering/RenderTable.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 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 182 matching lines @@
     if (beforeChild && !beforeChild->isTableSection() && beforeChild->style()->display() != TABLE_CAPTION && beforeChild->style()->display() != TABLE_COLUMN_GROUP)
         beforeChild = 0;
 
     RenderTableSection* section = RenderTableSection::createAnonymousWithParentRenderer(this);
     addChild(section, beforeChild);
     section->addChild(child);
 }
 
 void RenderTable::addCaption(const RenderTableCaption* caption)
 {
-    ASSERT(m_captions.find(caption) == notFound);
+    ASSERT(m_captions.find(caption) == kNotFound);
     m_captions.append(const_cast<RenderTableCaption*>(caption));
 }
 
 void RenderTable::removeCaption(const RenderTableCaption* oldCaption)
 {
     size_t index = m_captions.find(oldCaption);
-    ASSERT(index != notFound);
-    if (index == notFound)
+    ASSERT(index != kNotFound);
+    if (index == kNotFound)
         return;
 
     m_captions.remove(index);
 }
 
 void RenderTable::invalidateCachedColumns()
 {
     m_columnRenderersValid = false;
     m_columnRenderers.resize(0);
 }
@@ skipping 1217 matching lines @@
 const BorderValue& RenderTable::tableEndBorderAdjoiningCell(const RenderTableCell* cell) const
 {
     ASSERT(cell->isFirstOrLastCellInRow());
     if (hasSameDirectionAs(cell->row()))
         return style()->borderEnd();
 
     return style()->borderStart();
 }
 
 }