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

third_party/WebKit/Source/core/html/HTMLFormControlElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 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 50 matching lines @@
     void setChangedSinceLastFormControlChangeEvent(bool);
 
     virtual void dispatchFormControlChangeEvent();
     void dispatchChangeEvent();
     void dispatchFormControlInputEvent();
 
     HTMLFormElement* formOwner() const final;
 
     bool isDisabledFormControl() const override;
 
+    bool matchesEnabledPseudoClass() const override;
+
     bool isEnumeratable() const override { return false; }
 
     bool isRequired() const;
 
     const AtomicString& type() const { return formControlType(); }
 
     virtual const AtomicString& formControlType() const = 0;
 
     virtual bool canTriggerImplicitSubmission() const { return false; }
 
@@ skipping 122 matching lines @@
 {
     return element.isFormControlElement();
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLFormControlElement);
 DEFINE_TYPE_CASTS(HTMLFormControlElement, FormAssociatedElement, control, control->isFormControlElement(), control.isFormControlElement());
 
 } // namespace blink
 
 #endif