Remove EditableLinkBehavior, which is always set to NeverLive by Chromium.

Source/core/html/HTMLAnchorElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2007, 2008, 2009, 2010 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 89 matching lines @@
     virtual bool hasLegalLinkAttribute(const QualifiedName&) const OVERRIDE FINAL;
     virtual bool canStartSelection() const OVERRIDE FINAL;
     virtual short tabIndex() const OVERRIDE FINAL;
     virtual bool draggable() const OVERRIDE FINAL;
     virtual bool isInteractiveContent() const OVERRIDE FINAL;
 
     void sendPings(const KURL& destinationURL);
     AtomicString target() const;
     void handleClick(Event*);
 
-    enum EventType {
-        MouseEventWithoutShiftKey,
-        MouseEventWithShiftKey,
-        NonMouseEvent,
-    };
-    static EventType eventType(Event*);
-    bool treatLinkAsLiveForEventType(EventType) const;
-
-    Element* rootEditableElementForSelectionOnMouseDown() const;
-    void setRootEditableElementForSelectionOnMouseDown(Element*);
-    void clearRootEditableElementForSelectionOnMouseDown();
-
     class PrefetchEventHandler;
     PrefetchEventHandler* prefetchEventHandler();
 
-    bool m_hasRootEditableElementForSelectionOnMouseDown : 1;
-    bool m_wasShiftKeyDownOnMouseDown : 1;
-    uint32_t m_linkRelations : 30;
+    uint32_t m_linkRelations;
     OwnPtr<PrefetchEventHandler> m_prefetchEventHandler;
     mutable LinkHash m_cachedVisitedLinkHash;
 };
 
 inline LinkHash HTMLAnchorElement::visitedLinkHash() const
 {
     if (!m_cachedVisitedLinkHash)
         m_cachedVisitedLinkHash = WebCore::visitedLinkHash(document().baseURL(), fastGetAttribute(HTMLNames::hrefAttr));
     return m_cachedVisitedLinkHash;
 }
 
 // Functions shared with the other anchor elements (i.e., SVG).
 
 bool isEnterKeyKeydownEvent(Event*);
 bool isLinkClick(Event*);
 
 } // namespace WebCore
 
 #endif // HTMLAnchorElement_h