Add a WebDocument::watchCssSelectors(selectors)

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 733 matching lines @@
 #ifndef NDEBUG
     virtual void formatForDebugger(char* buffer, unsigned length) const;
 #endif
 
     bool pseudoStyleCacheIsInvalid(const RenderStyle* currentStyle, RenderStyle* newStyle);
 
     void cancelFocusAppearanceUpdate();
 
     virtual RenderStyle* virtualComputedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO) { return computedStyle(pseudoElementSpecifier); }
 
+    enum AddOrRemove {
+        Add,
+        Remove,
+    };
+    void updateCallbackSelectors(AddOrRemove);
+
     // cloneNode is private so that non-virtual cloneElementWithChildren and cloneElementWithoutChildren
     // are used instead.
     virtual PassRefPtr<Node> cloneNode(bool deep) OVERRIDE;
     virtual PassRefPtr<Element> cloneElementWithoutAttributesAndChildren();
 
     QualifiedName m_tagName;
     bool rareDataStyleAffectedByEmpty() const;
     bool rareDataChildrenAffectedByHover() const;
     bool rareDataChildrenAffectedByActive() const;
     bool rareDataChildrenAffectedByDrag() const;
@@ skipping 324 matching lines @@
 
 inline const Attribute* ElementData::attributeItem(unsigned index) const
 {
     RELEASE_ASSERT(index < length());
     return attributeBase() + index;
 }
 
 } // namespace
 
 #endif