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diff --git a/Source/WebCore/rendering/RenderText.h b/Source/WebCore/rendering/RenderText.h
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+++ b/Source/WebCore/rendering/RenderText.h
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+/*
+ * (C) 1999 Lars Knoll (knoll@kde.org)
+ * (C) 2000 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef RenderText_h
+#define RenderText_h
+
+#include "RenderObject.h"
+#include <wtf/Forward.h>
+
+namespace WebCore {
+
+class InlineTextBox;
+
+class RenderText : public RenderObject {
+public:
+    RenderText(Node*, PassRefPtr<StringImpl>);
+#ifndef NDEBUG
+    virtual ~RenderText();
+#endif
+
+    virtual const char* renderName() const;
+
+    virtual bool isTextFragment() const;
+    virtual bool isWordBreak() const;
+
+    virtual PassRefPtr<StringImpl> originalText() const;
+
+    void extractTextBox(InlineTextBox*);
+    void attachTextBox(InlineTextBox*);
+    void removeTextBox(InlineTextBox*);
+
+    virtual void destroy();
+
+    StringImpl* text() const { return m_text.impl(); }
+    String textWithoutTranscoding() const;
+
+    InlineTextBox* createInlineTextBox();
+    void dirtyLineBoxes(bool fullLayout);
+
+    virtual void absoluteRects(Vector<IntRect>&, int tx, int ty);
+    void absoluteRectsForRange(Vector<IntRect>&, unsigned startOffset = 0, unsigned endOffset = UINT_MAX, bool useSelectionHeight = false);
+
+    virtual void absoluteQuads(Vector<FloatQuad>&);
+    void absoluteQuadsForRange(Vector<FloatQuad>&, unsigned startOffset = 0, unsigned endOffset = UINT_MAX, bool useSelectionHeight = false);
+
+    enum ClippingOption { NoClipping, ClipToEllipsis };
+    void absoluteQuads(Vector<FloatQuad>&, ClippingOption option = NoClipping);
+
+    virtual VisiblePosition positionForPoint(const IntPoint&);
+
+    const UChar* characters() const { return m_text.characters(); }
+    unsigned textLength() const { return m_text.length(); } // non virtual implementation of length()
+    void positionLineBox(InlineBox*);
+
+    virtual unsigned width(unsigned from, unsigned len, const Font&, int xPos, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
+    virtual unsigned width(unsigned from, unsigned len, int xPos, bool firstLine = false, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
+
+    virtual int minPreferredLogicalWidth() const;
+    virtual int maxPreferredLogicalWidth() const;
+
+    void trimmedPrefWidths(int leadWidth,
+                           int& beginMinW, bool& beginWS,
+                           int& endMinW, bool& endWS,
+                           bool& hasBreakableChar, bool& hasBreak,
+                           int& beginMaxW, int& endMaxW,
+                           int& minW, int& maxW, bool& stripFrontSpaces);
+
+    virtual IntRect linesBoundingBox() const;
+
+    IntPoint firstRunOrigin() const;
+    int firstRunX() const;
+    int firstRunY() const;
+
+    void setText(PassRefPtr<StringImpl>, bool force = false);
+    void setTextWithOffset(PassRefPtr<StringImpl>, unsigned offset, unsigned len, bool force = false);
+
+    virtual bool canBeSelectionLeaf() const { return true; }
+    virtual void setSelectionState(SelectionState s);
+    virtual IntRect selectionRectForRepaint(RenderBoxModelObject* repaintContainer, bool clipToVisibleContent = true);
+    virtual IntRect localCaretRect(InlineBox*, int caretOffset, int* extraWidthToEndOfLine = 0);
+
+    virtual int marginLeft() const { return style()->marginLeft().calcMinValue(0); }
+    virtual int marginRight() const { return style()->marginRight().calcMinValue(0); }
+
+    virtual IntRect clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer);
+
+    InlineTextBox* firstTextBox() const { return m_firstTextBox; }
+    InlineTextBox* lastTextBox() const { return m_lastTextBox; }
+
+    virtual int caretMinOffset() const;
+    virtual int caretMaxOffset() const;
+    virtual unsigned caretMaxRenderedOffset() const;
+
+    virtual int previousOffset(int current) const;
+    virtual int previousOffsetForBackwardDeletion(int current) const;
+    virtual int nextOffset(int current) const;
+
+    bool containsReversedText() const { return m_containsReversedText; }
+
+    InlineTextBox* findNextInlineTextBox(int offset, int& pos) const;
+
+    bool allowTabs() const { return !style()->collapseWhiteSpace(); }
+
+    void checkConsistency() const;
+
+    virtual void computePreferredLogicalWidths(int leadWidth);
+    bool isAllCollapsibleWhitespace();
+    
+protected:
+    virtual void styleWillChange(StyleDifference, const RenderStyle*) { }
+    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
+
+    virtual void setTextInternal(PassRefPtr<StringImpl>);
+    virtual UChar previousCharacter() const;
+    
+    virtual InlineTextBox* createTextBox(); // Subclassed by SVG.
+
+private:
+    void computePreferredLogicalWidths(int leadWidth, HashSet<const SimpleFontData*>& fallbackFonts, GlyphOverflow&);
+
+    // Make length() private so that callers that have a RenderText*
+    // will use the more efficient textLength() instead, while
+    // callers with a RenderObject* can continue to use length().
+    virtual unsigned length() const { return textLength(); }
+
+    virtual void paint(PaintInfo&, int, int) { ASSERT_NOT_REACHED(); }
+    virtual void layout() { ASSERT_NOT_REACHED(); }
+    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int, HitTestAction) { ASSERT_NOT_REACHED(); return false; }
+
+    void deleteTextBoxes();
+    bool containsOnlyWhitespace(unsigned from, unsigned len) const;
+    int widthFromCache(const Font&, int start, int len, int xPos, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow*) const;
+    bool isAllASCII() const { return m_isAllASCII; }
+    void updateNeedsTranscoding();
+
+    inline void transformText(String&) const;
+
+    int m_minWidth; // here to minimize padding in 64-bit.
+
+    String m_text;
+
+    InlineTextBox* m_firstTextBox;
+    InlineTextBox* m_lastTextBox;
+
+    int m_maxWidth;
+    int m_beginMinWidth;
+    int m_endMinWidth;
+
+    bool m_hasBreakableChar : 1; // Whether or not we can be broken into multiple lines.
+    bool m_hasBreak : 1; // Whether or not we have a hard break (e.g., <pre> with '\n').
+    bool m_hasTab : 1; // Whether or not we have a variable width tab character (e.g., <pre> with '\t').
+    bool m_hasBeginWS : 1; // Whether or not we begin with WS (only true if we aren't pre)
+    bool m_hasEndWS : 1; // Whether or not we end with WS (only true if we aren't pre)
+    bool m_linesDirty : 1; // This bit indicates that the text run has already dirtied specific
+                           // line boxes, and this hint will enable layoutInlineChildren to avoid
+                           // just dirtying everything when character data is modified (e.g., appended/inserted
+                           // or removed).
+    bool m_containsReversedText : 1;
+    bool m_isAllASCII : 1;
+    mutable bool m_knownToHaveNoOverflowAndNoFallbackFonts : 1;
+    bool m_needsTranscoding : 1;
+};
+
+inline RenderText* toRenderText(RenderObject* object)
+{ 
+    ASSERT(!object || object->isText());
+    return static_cast<RenderText*>(object);
+}
+
+inline const RenderText* toRenderText(const RenderObject* object)
+{ 
+    ASSERT(!object || object->isText());
+    return static_cast<const RenderText*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderText(const RenderText*);
+
+#ifdef NDEBUG
+inline void RenderText::checkConsistency() const
+{
+}
+#endif
+
+} // namespace WebCore
+
+#endif // RenderText_h