[CSS Regions] Add new regionOversetChange event

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 13 matching lines @@
 
 #ifndef Element_h
 #define Element_h
 
 #include "HTMLNames.h"
 #include "core/dom/Attribute.h"
 #include "core/dom/Document.h"
 #include "core/dom/SpaceSplitString.h"
 #include "core/html/CollectionType.h"
 #include "core/platform/ScrollTypes.h"
+#include "core/rendering/RegionOversetState.h"
 
 namespace WebCore {
 
 class Animation;
 
 class Attr;
 class ClientRect;
 class ClientRectList;
 class DOMStringMap;
 class DOMTokenList;
@@ skipping 407 matching lines @@
     void setChildrenAffectedByDirectAdjacentRules();
     void setChildrenAffectedByForwardPositionalRules();
     void setChildrenAffectedByBackwardPositionalRules();
     void setChildIndex(unsigned);
 
     void setIsInCanvasSubtree(bool);
     bool isInCanvasSubtree() const;
 
     bool isUnresolvedCustomElement();
 
+    void setRegionOversetState(RegionOversetState);
+    RegionOversetState regionOversetState() const;
+
     AtomicString computeInheritedLanguage() const;
     Locale& locale() const;
 
     virtual void accessKeyAction(bool /*sendToAnyEvent*/) { }
 
     virtual bool isURLAttribute(const Attribute&) const { return false; }
     virtual bool isHTMLContentAttribute(const Attribute&) const { return false; }
 
     KURL getURLAttribute(const QualifiedName&) const;
     KURL getNonEmptyURLAttribute(const QualifiedName&) const;
@@ skipping 523 matching lines @@
 
 inline const Attribute* ElementData::attributeItem(unsigned index) const
 {
     RELEASE_ASSERT(index < length());
     return attributeBase() + index;
 }
 
 } // namespace
 
 #endif