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

Source/core/inspector/TimelineTraceEventProcessor.h

 /*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
@@ skipping 157 matching lines @@
         int argumentCount() const { return m_argumentCount; }
         bool isNull() const { return !m_name; }
 
         bool asBool(const char* name) const
         {
             return parameter(name, TypeBool).m_bool;
         }
         long long asInt(const char* name) const
         {
             size_t index = findParameter(name);
-            if (index == notFound || (m_argumentTypes[index] != TypeInt && m_argumentTypes[index] != TypeUInt)) {
+            if (index == kNotFound || (m_argumentTypes[index] != TypeInt && m_argumentTypes[index] != TypeUInt)) {
                 ASSERT_NOT_REACHED();
                 return 0;
             }
             return reinterpret_cast<const TraceValueUnion*>(m_argumentValues + index)->m_int;
         }
         unsigned long long asUInt(const char* name) const
         {
             return asInt(name);
         }
         double asDouble(const char* name) const
@@ skipping 71 matching lines @@
 
     HashMap<unsigned long long, long long> m_layerToNodeMap;
     unsigned long long m_layerId;
     double m_paintSetupStart;
     double m_paintSetupEnd;
 };
 
 } // namespace WebCore
 
 #endif // !defined(TimelineTraceEventProcessor_h)