Move custom element definitions into ElementRareData

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, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 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 25 matching lines @@
 #include "core/page/FocusType.h"
 #include "platform/scroll/ScrollTypes.h"
 
 namespace WebCore {
 
 class ActiveAnimations;
 class Attr;
 class Attribute;
 class ClientRect;
 class ClientRectList;
+class CustomElementDefinition;
 class DOMStringMap;
 class DOMTokenList;
 class ElementRareData;
 class ElementShadow;
 class ExceptionState;
 class Image;
 class InputMethodContext;
 class IntSize;
 class Locale;
 class MutableStylePropertySet;
@@ skipping 410 matching lines @@
 
     // Used for disabled form elements; if true, prevents mouse events from being dispatched
     // to event listeners, and prevents DOMActivate events from being sent at all.
     virtual bool isDisabledFormControl() const { return false; }
 
     bool hasPendingResources() const;
     void setHasPendingResources();
     void clearHasPendingResources();
     virtual void buildPendingResource() { };
 
+    void setCustomElementDefinition(PassRefPtr<CustomElementDefinition>);
+    CustomElementDefinition* customElementDefinition() const;
+
     enum {
         ALLOW_KEYBOARD_INPUT = 1 << 0,
         LEGACY_MOZILLA_REQUEST = 1 << 1,
     };
 
     void webkitRequestFullScreen(unsigned short flags);
     bool containsFullScreenElement() const;
     void setContainsFullScreenElement(bool);
     void setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(bool);
 
@@ skipping 373 matching lines @@
 }
 
 inline bool isShadowHost(const Element* element)
 {
     return element && element->shadow();
 }
 
 } // namespace
 
 #endif