output should not match to :enabled or :disabled pseudo classes.

third_party/WebKit/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 74 matching lines @@
     LinkHash visitedLinkHash() const;
     void invalidateCachedVisitedLinkHash() { m_cachedVisitedLinkHash = 0; }
 
     void sendPings(const KURL& destinationURL) const;
 
 protected:
     HTMLAnchorElement(const QualifiedName&, Document&);
 
     void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;
     bool supportsFocus() const override;
+    bool matchesEnabledPseudoClass() const override;
 
 private:
     bool shouldHaveFocusAppearance() const final;
     void dispatchFocusEvent(Element* oldFocusedElement, WebFocusType, InputDeviceCapabilities* sourceCapabilities) override;
     void dispatchBlurEvent(Element* newFocusedElement, WebFocusType, InputDeviceCapabilities* sourceCapabilities) override;
     bool isMouseFocusable() const override;
     bool isKeyboardFocusable() const override;
     void defaultEventHandler(Event*) final;
     void setActive(bool = true) final;
     void accessKeyAction(bool sendMouseEvents) final;
@@ skipping 19 matching lines @@
 }
 
 // Functions shared with the other anchor elements (i.e., SVG).
 
 bool isEnterKeyKeydownEvent(Event*);
 bool isLinkClick(Event*);
 
 } // namespace blink
 
 #endif // HTMLAnchorElement_h