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

Source/core/rendering/RenderTable.cpp

Index: Source/core/rendering/RenderTable.cpp
diff --git a/Source/core/rendering/RenderTable.cpp b/Source/core/rendering/RenderTable.cpp
index 2979a16db5c4ca2ebfacb0e25a1f5d74ba564ddc..4cbcf05b99a5be2b462e34f0b8051e7a41055c6a 100644
--- a/Source/core/rendering/RenderTable.cpp
+++ b/Source/core/rendering/RenderTable.cpp
@@ -200,15 +200,15 @@ void RenderTable::addChild(RenderObject* child, RenderObject* beforeChild)
 
 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);