Adding Element.closest() API

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 393 matching lines @@
 
     void beginParsingChildren() { setIsFinishedParsingChildren(false); }
 
     PseudoElement* pseudoElement(PseudoId) const;
     RenderObject* pseudoElementRenderer(PseudoId) const;
 
     virtual bool matchesReadOnlyPseudoClass() const { return false; }
     virtual bool matchesReadWritePseudoClass() const { return false; }
     virtual bool matchesValidityPseudoClasses() const { return false; }
     bool matches(const String& selectors, ExceptionState&);
+    Element* closest(const String& selectors, ExceptionState&);
     virtual bool shouldAppearIndeterminate() const { return false; }
 
     DOMTokenList& classList();
 
     DOMStringMap& dataset();
 
 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
     virtual bool isDateTimeEditElement() const { return false; }
     virtual bool isDateTimeFieldElement() const { return false; }
     virtual bool isPickerIndicatorElement() const { return false; }
@@ skipping 437 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