Drop LABEL element from form-associated elements.

third_party/WebKit/Source/core/html/HTMLLabelElement.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, 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef HTMLLabelElement_h
 #define HTMLLabelElement_h
 
 #include "core/CoreExport.h"
-#include "core/html/FormAssociatedElement.h"
 #include "core/html/HTMLElement.h"
-#include "core/html/LabelableElement.h"
 
 namespace blink {
 
-class CORE_EXPORT HTMLLabelElement final : public HTMLElement, public FormAssociatedElement {
+class LabelableElement;
+
+class CORE_EXPORT HTMLLabelElement final : public HTMLElement {
     DEFINE_WRAPPERTYPEINFO();
-    USING_GARBAGE_COLLECTED_MIXIN(HTMLLabelElement);
 public:
-    static HTMLLabelElement* create(Document&, HTMLFormElement*);
+    static HTMLLabelElement* create(Document&);
     LabelableElement* control() const;
+    HTMLFormElement* form() const;
 
     bool willRespondToMouseClickEvents() override;
 
-    DECLARE_VIRTUAL_TRACE();
-
-    HTMLFormElement* formOwner() const override;
-    HTMLFormElement* formForBinding() const;
-
 private:
-    explicit HTMLLabelElement(Document&, HTMLFormElement*);
+    explicit HTMLLabelElement(Document&);
     bool isInInteractiveContent(Node*) const;
 
     bool isInteractiveContent() const override;
     void accessKeyAction(bool sendMouseEvents) override;
 
     InsertionNotificationRequest insertedInto(ContainerNode*) override;
     void removedFrom(ContainerNode*) override;
 
     // Overridden to update the hover/active state of the corresponding control.
     void setActive(bool = true) override;
     void setHovered(bool = true) override;
 
     // Overridden to either click() or focus() the corresponding control.
     void defaultEventHandler(Event*) override;
 
     void focus(const FocusParams&) override;
 
-    // FormAssociatedElement methods
-    bool isFormControlElement() const override { return false; }
-    bool isEnumeratable() const override { return false; }
-    bool isLabelElement() const override { return true; }
-
     void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;
 
     void updateLabel(TreeScope&, const AtomicString& oldForAttributeValue, const AtomicString& newForAttributeValue);
 
     bool m_processingClick;
 };
 
-
-template<typename T> inline const T& toElement(const FormAssociatedElement&);
-template<typename T> inline const T* toElement(const FormAssociatedElement*);
-// Make toHTMLLabelElement() accept a FormAssociatedElement as input instead of a Node.
-template<> inline const HTMLLabelElement* toElement<HTMLLabelElement>(const FormAssociatedElement* element)
-{
-    const HTMLLabelElement* labelElement = static_cast<const HTMLLabelElement*>(element);
-    // FormAssociatedElement doesn't have hasTagName, hence check for assert.
-    ASSERT_WITH_SECURITY_IMPLICATION(!labelElement || labelElement->hasTagName(HTMLNames::labelTag));
-    return labelElement;
-}
-
-template<> inline const HTMLLabelElement& toElement<HTMLLabelElement>(const FormAssociatedElement& element)
-{
-    const HTMLLabelElement& labelElement = static_cast<const HTMLLabelElement&>(element);
-    // FormAssociatedElement doesn't have hasTagName, hence check for assert.
-    ASSERT_WITH_SECURITY_IMPLICATION(labelElement.hasTagName(HTMLNames::labelTag));
-    return labelElement;
-}
-
 } // namespace blink
 
 #endif // HTMLLabelElement_h