Changed EInsideLink to an enum class with an unsigned type.

third_party/WebKit/Source/core/dom/VisitedLinkState.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 34 matching lines @@
   static VisitedLinkState* create(const Document& document) {
     return new VisitedLinkState(document);
   }
 
   void invalidateStyleForAllLinks(bool invalidateVisitedLinkHashes);
   void invalidateStyleForLink(LinkHash);
 
   EInsideLink determineLinkState(const Element& element) {
     if (element.isLink())
       return determineLinkStateSlowCase(element);
-    return NotInsideLink;
+    return EInsideLink::kNotInsideLink;
   }
 
   DECLARE_TRACE();
 
  private:
   explicit VisitedLinkState(const Document&);
   const Document& document() const { return *m_document; }
 
   EInsideLink determineLinkStateSlowCase(const Element&);
 
   Member<const Document> m_document;
   HashSet<LinkHash, LinkHashHash> m_linksCheckedForVisitedState;
 };
 
 }  // namespace blink
 
 #endif