Set a bit on Custom Elements on creation to simplify wrapping

Source/core/dom/ElementRareData.h

 /*
  * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith <catfish.man@gmail.com>
  *
  * 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,
@@ skipping 68 matching lines @@
     void setChildrenAffectedByLastChildRules(bool value) { m_childrenAffectedByLastChildRules = value; }
     bool childrenAffectedByDirectAdjacentRules() const { return m_childrenAffectedByDirectAdjacentRules; }
     void setChildrenAffectedByDirectAdjacentRules(bool value) { m_childrenAffectedByDirectAdjacentRules = value; }
     bool childrenAffectedByForwardPositionalRules() const { return m_childrenAffectedByForwardPositionalRules; }
     void setChildrenAffectedByForwardPositionalRules(bool value) { m_childrenAffectedByForwardPositionalRules = value; }
     bool childrenAffectedByBackwardPositionalRules() const { return m_childrenAffectedByBackwardPositionalRules; }
     void setChildrenAffectedByBackwardPositionalRules(bool value) { m_childrenAffectedByBackwardPositionalRules = value; }
     unsigned childIndex() const { return m_childIndex; }
     void setChildIndex(unsigned index) { m_childIndex = index; }
 
+    void setIsCustomElement();
+    bool isCustomElement() const { return m_isCustomElement; }
+
     // Manually called by Node::reportMemoryUsage.
     void reportMemoryUsage(MemoryObjectInfo*) const;
 
     void clearShadow() { m_shadow = nullptr; }
     ElementShadow* shadow() const { return m_shadow.get(); }
     ElementShadow* ensureShadow()
     {
         if (!m_shadow)
             m_shadow = ElementShadow::create();
         return m_shadow.get();
@@ skipping 45 matching lines @@
     unsigned m_childrenAffectedByDrag : 1;
     // Bits for dynamic child matching.
     // We optimize for :first-child and :last-child. The other positional child selectors like nth-child or
     // *-child-of-type, we will just give up and re-evaluate whenever children change at all.
     unsigned m_childrenAffectedByFirstChildRules : 1;
     unsigned m_childrenAffectedByLastChildRules : 1;
     unsigned m_childrenAffectedByDirectAdjacentRules : 1;
     unsigned m_childrenAffectedByForwardPositionalRules : 1;
     unsigned m_childrenAffectedByBackwardPositionalRules : 1;
 
+    unsigned m_isCustomElement : 1;
+
     LayoutSize m_minimumSizeForResizing;
     IntSize m_savedLayerScrollOffset;
     RefPtr<RenderStyle> m_computedStyle;
 
     OwnPtr<DatasetDOMStringMap> m_dataset;
     OwnPtr<ClassList> m_classList;
     OwnPtr<ElementShadow> m_shadow;
     OwnPtr<NamedNodeMap> m_attributeMap;
 
     RefPtr<PseudoElement> m_generatedBefore;
@@ skipping 22 matching lines @@
     , m_hasPendingResources(false)
 #endif
     , m_childrenAffectedByHover(false)
     , m_childrenAffectedByActive(false)
     , m_childrenAffectedByDrag(false)
     , m_childrenAffectedByFirstChildRules(false)
     , m_childrenAffectedByLastChildRules(false)
     , m_childrenAffectedByDirectAdjacentRules(false)
     , m_childrenAffectedByForwardPositionalRules(false)
     , m_childrenAffectedByBackwardPositionalRules(false)
+    , m_isCustomElement(false)
     , m_minimumSizeForResizing(defaultMinimumSizeForResizing())
 {
 }
 
 inline ElementRareData::~ElementRareData()
 {
     ASSERT(!m_shadow);
     ASSERT(!m_generatedBefore);
     ASSERT(!m_generatedAfter);
 }
 
+inline void ElementRareData::setIsCustomElement()
+{
+    m_isCustomElement = true;
+}
+
 inline void ElementRareData::setPseudoElement(PseudoId pseudoId, PassRefPtr<PseudoElement> element)
 {
     switch (pseudoId) {
     case BEFORE:
         releasePseudoElement(m_generatedBefore.get());
         m_generatedBefore = element;
         break;
     case AFTER:
         releasePseudoElement(m_generatedAfter.get());
         m_generatedAfter = element;
@@ skipping 44 matching lines @@
     setChildrenAffectedByFirstChildRules(false);
     setChildrenAffectedByLastChildRules(false);
     setChildrenAffectedByDirectAdjacentRules(false);
     setChildrenAffectedByForwardPositionalRules(false);
     setChildrenAffectedByBackwardPositionalRules(false);
 }
 
 } // namespace
 
 #endif // ElementRareData_h