use c++03 style enum scope

Source/core/events/Event.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 207 matching lines @@
 EventPath& Event::ensureEventPath()
 {
     if (!m_eventPath)
         m_eventPath = adoptPtrWillBeNoop(new EventPath(this));
     return *m_eventPath;
 }
 
 PassRefPtrWillBeRawPtr<StaticNodeList> Event::path() const
 {
     if (!m_currentTarget) {
-        ASSERT(m_eventPhase == PhaseType::NONE);
+        ASSERT(m_eventPhase == Event::NONE);
         if (!m_eventPath) {
             // Before dispatching the event
             return StaticNodeList::createEmpty();
         }
         ASSERT(!m_eventPath->isEmpty());
         // After dispatching the event
         return m_eventPath->last().treeScopeEventContext().ensureEventPath(*m_eventPath);
     }
     if (!m_currentTarget->toNode())
         return StaticNodeList::createEmpty();
@@ skipping 21 matching lines @@
 
 void Event::trace(Visitor* visitor)
 {
     visitor->trace(m_currentTarget);
     visitor->trace(m_target);
     visitor->trace(m_underlyingEvent);
     visitor->trace(m_eventPath);
 }
 
 } // namespace blink