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

Source/core/inspector/InspectorTimelineAgent.cpp

 /*
 * 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 634 matching lines @@
     }
     appendRecord(TimelineRecordFactory::createTimeStampData(message), TimelineRecordType::TimeStamp, true, frameForScriptExecutionContext(context));
 }
 
 void InspectorTimelineAgent::consoleTimelineEnd(ScriptExecutionContext* context, const String& title, ScriptState* state)
 {
     if (!m_state->getBoolean(TimelineAgentState::enabled))
         return;
 
     size_t index = m_consoleTimelines.find(title);
-    if (index == notFound) {
+    if (index == kNotFound) {
         String message = String::format("Timeline '%s' was not started.", title.utf8().data());
         page()->console().addMessage(ConsoleAPIMessageSource, DebugMessageLevel, message, String(), 0, 0, 0, state);
         return;
     }
 
     String message = String::format("Timeline '%s' finished.", title.utf8().data());
     appendRecord(TimelineRecordFactory::createTimeStampData(message), TimelineRecordType::TimeStamp, true, frameForScriptExecutionContext(context));
     m_consoleTimelines.remove(index);
     if (!m_consoleTimelines.size() && isStarted() && !m_state->getBoolean(TimelineAgentState::startedFromProtocol))
         innerStop(true);
@@ skipping 249 matching lines @@
     return m_timeConverter.fromMonotonicallyIncreasingTime(WTF::monotonicallyIncreasingTime());
 }
 
 Page* InspectorTimelineAgent::page()
 {
     return m_pageAgent ? m_pageAgent->page() : 0;
 }
 
 } // namespace WebCore