Remove Attr child nodes (making Attr a Node, not a ContainerNode)

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 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
@@ skipping 235 matching lines @@
 
     const AtomicString& locateNamespacePrefix(const AtomicString& namespaceURI) const;
 
     virtual String nodeName() const override;
 
     PassRefPtrWillBeRawPtr<Element> cloneElementWithChildren();
     PassRefPtrWillBeRawPtr<Element> cloneElementWithoutChildren();
 
     void scheduleSVGFilterLayerUpdateHack();
 
-    void normalizeAttributes();
-
     void setBooleanAttribute(const QualifiedName& name, bool);
 
     virtual const StylePropertySet* additionalPresentationAttributeStyle() { return nullptr; }
     void invalidateStyleAttribute();
 
     const StylePropertySet* inlineStyle() const { return elementData() ? elementData()->m_inlineStyle.get() : nullptr; }
 
     bool setInlineStyleProperty(CSSPropertyID, CSSValueID identifier, bool important = false);
     bool setInlineStyleProperty(CSSPropertyID, double value, CSSPrimitiveValue::UnitType, bool important = false);
     bool setInlineStyleProperty(CSSPropertyID, const String& value, bool important = false);
@@ skipping 315 matching lines @@
     void updatePseudoElement(PseudoId, StyleRecalcChange);
     bool updateFirstLetter(Element*);
 
     inline void createPseudoElementIfNeeded(PseudoId);
 
     // FIXME: Everyone should allow author shadows.
     virtual bool areAuthorShadowsAllowed() const { return true; }
     virtual void didAddUserAgentShadowRoot(ShadowRoot&) { }
     virtual bool alwaysCreateUserAgentShadowRoot() const { return false; }
 
-    // FIXME: Remove the need for Attr to call willModifyAttribute/didModifyAttribute.
-    friend class Attr;
-
     enum SynchronizationOfLazyAttribute { NotInSynchronizationOfLazyAttribute = 0, InSynchronizationOfLazyAttribute };
 
     void didAddAttribute(const QualifiedName&, const AtomicString&);
     void willModifyAttribute(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue);
     void didModifyAttribute(const QualifiedName&, const AtomicString&);
     void didRemoveAttribute(const QualifiedName&);
 
     void synchronizeAllAttributes() const;
     void synchronizeAttribute(const QualifiedName&) const;
 
@@ skipping 280 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif // Element_h