Convert first letter into a pseudo element.

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 388 matching lines @@
     // This is needed for <applet> and <object> elements, which can't lay themselves out
     // until they know all of their nested <param>s. [Radar 3603191, 4040848].
     // Also used for script elements and some SVG elements for similar purposes,
     // but making parsing a special case in this respect should be avoided if possible.
     virtual void finishParsingChildren();
 
     void beginParsingChildren() { setIsFinishedParsingChildren(false); }
 
     PseudoElement* pseudoElement(PseudoId) const;
     RenderObject* pseudoElementRenderer(PseudoId) const;
+    void clearFirstLetterPseudoElement();
+    virtual RenderObject* firstLetterTextRenderer() const;
+    unsigned firstLetterLength(const String& text) const;
 
     virtual bool matchesReadOnlyPseudoClass() const { return false; }
     virtual bool matchesReadWritePseudoClass() const { return false; }
     bool matches(const String& selectors, ExceptionState&);
     virtual bool shouldAppearIndeterminate() const { return false; }
 
     DOMTokenList& classList();
 
     DOMStringMap& dataset();
 
@@ skipping 433 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