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

Source/core/inspector/InspectorStyleSheet.cpp

Index: Source/core/inspector/InspectorStyleSheet.cpp
diff --git a/Source/core/inspector/InspectorStyleSheet.cpp b/Source/core/inspector/InspectorStyleSheet.cpp
index 56d40a94d7750d7384b2268bc8cc41176bd3aa47..698e4f0b0b1e6293e92e1f2e0ecef3142106b979 100644
--- a/Source/core/inspector/InspectorStyleSheet.cpp
+++ b/Source/core/inspector/InspectorStyleSheet.cpp
@@ -362,7 +362,7 @@ void StyleSheetHandler::endProperty(bool isImportant, bool isParsed, unsigned of
     if (propertyString.endsWith(';'))
         propertyString = propertyString.left(propertyString.length() - 1);
     size_t colonIndex = propertyString.find(':');
-    ASSERT(colonIndex != notFound);
+    ASSERT(colonIndex != kNotFound);
 
     String name = propertyString.left(colonIndex).stripWhiteSpace();
     String value = propertyString.substring(colonIndex + 1, propertyString.length()).stripWhiteSpace();
@@ -1539,7 +1539,7 @@ unsigned InspectorStyleSheet::ruleIndexByRule(const CSSRule* rule) const
 {
     ensureFlatRules();
     size_t index = m_flatRules.find(rule);
-    return index == notFound ? UINT_MAX : static_cast<unsigned>(index);
+    return index == kNotFound ? UINT_MAX : static_cast<unsigned>(index);
 }
 
 bool InspectorStyleSheet::checkPageStyleSheet(ExceptionState& es) const