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diff --git a/WebCore/platform/graphics/mac/ComplexTextController.h b/WebCore/platform/graphics/mac/ComplexTextController.h
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+/*
+ * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ComplexTextController_h
+#define ComplexTextController_h
+
+#include "GlyphBuffer.h"
+#include <wtf/HashSet.h>
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+#include <wtf/RetainPtr.h>
+#include <wtf/Vector.h>
+#include <wtf/unicode/Unicode.h>
+
+namespace WebCore {
+
+class Font;
+class SimpleFontData;
+class TextRun;
+
+class ComplexTextController {
+public:
+    ComplexTextController(const Font*, const TextRun&, bool mayUseNaturalWritingDirection = false, HashSet<const SimpleFontData*>* fallbackFonts = 0);
+
+    // Advance and emit glyphs up to the specified character.
+    void advance(unsigned to, GlyphBuffer* = 0);
+
+    // Compute the character offset for a given x coordinate.
+    int offsetForPosition(int x, bool includePartialGlyphs);
+
+    // Returns the width of everything we've consumed so far.
+    float runWidthSoFar() const { return m_runWidthSoFar; }
+
+    float totalWidth() const { return m_totalWidth; }
+
+    // Extra width to the left of the leftmost glyph.
+    float finalRoundingWidth() const { return m_finalRoundingWidth; }
+
+private:
+    class ComplexTextRun : public RefCounted<ComplexTextRun> {
+    public:
+#if USE(CORE_TEXT)
+        static PassRefPtr<ComplexTextRun> create(CTRunRef ctRun, const SimpleFontData* fontData, const UChar* characters, unsigned stringLocation, size_t stringLength)
+        {
+            return adoptRef(new ComplexTextRun(ctRun, fontData, characters, stringLocation, stringLength));
+        }
+#elif USE(ATSUI)
+        static PassRefPtr<ComplexTextRun> create(ATSUTextLayout atsuTextLayout, const SimpleFontData* fontData, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr, bool directionalOverride)
+        {
+            return adoptRef(new ComplexTextRun(atsuTextLayout, fontData, characters, stringLocation, stringLength, ltr, directionalOverride));
+        }
+#endif
+        static PassRefPtr<ComplexTextRun> create(const SimpleFontData* fontData, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr)
+        {
+            return adoptRef(new ComplexTextRun(fontData, characters, stringLocation, stringLength, ltr));
+        }
+
+        unsigned glyphCount() const { return m_glyphCount; }
+        const SimpleFontData* fontData() const { return m_fontData; }
+        const UChar* characters() const { return m_characters; }
+        unsigned stringLocation() const { return m_stringLocation; }
+        size_t stringLength() const { return m_stringLength; }
+        CFIndex indexAt(size_t i) const { return m_indices[i]; }
+        const CGGlyph* glyphs() const { return m_glyphs; }
+        const CGSize* advances() const { return m_advances; }
+
+    private:
+#if USE(CORE_TEXT)
+        ComplexTextRun(CTRunRef, const SimpleFontData*, const UChar* characters, unsigned stringLocation, size_t stringLength);
+#elif USE(ATSUI)
+        ComplexTextRun(ATSUTextLayout, const SimpleFontData*, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr, bool directionalOverride);
+#endif
+        ComplexTextRun(const SimpleFontData*, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr);
+
+#if USE(ATSUI)
+#ifdef BUILDING_ON_TIGER
+        typedef UInt32 URefCon;
+#endif
+        static OSStatus overrideLayoutOperation(ATSULayoutOperationSelector, ATSULineRef, URefCon, void*, ATSULayoutOperationCallbackStatus*);
+#endif
+
+#if USE(CORE_TEXT)
+        RetainPtr<CTRunRef> m_CTRun;
+#endif
+        unsigned m_glyphCount;
+        const SimpleFontData* m_fontData;
+        const UChar* m_characters;
+        unsigned m_stringLocation;
+        size_t m_stringLength;
+#if USE(CORE_TEXT)
+        RetainPtr<CFMutableDataRef> m_indicesData;
+        const CFIndex* m_indices;
+#elif USE(ATSUI)
+        Vector<CFIndex, 64> m_indices;
+#endif
+        Vector<CGGlyph, 64> m_glyphsVector;
+        const CGGlyph* m_glyphs;
+        Vector<CGSize, 64> m_advancesVector;
+        const CGSize* m_advances;
+#if USE(ATSUI)
+        bool m_ltr;
+        bool m_directionalOverride;
+#endif
+    };
+
+    void collectComplexTextRuns();
+    void collectComplexTextRunsForCharacters(const UChar*, unsigned length, unsigned stringLocation, const SimpleFontData*);
+    void adjustGlyphsAndAdvances();
+
+    const Font& m_font;
+    const TextRun& m_run;
+    bool m_mayUseNaturalWritingDirection;
+
+    Vector<UChar, 256> m_smallCapsBuffer;
+
+    Vector<RefPtr<ComplexTextRun>, 16> m_complexTextRuns;
+    Vector<CGSize, 256> m_adjustedAdvances;
+    Vector<CGGlyph, 256> m_adjustedGlyphs;
+ 
+    unsigned m_currentCharacter;
+    int m_end;
+
+    CGFloat m_totalWidth;
+
+    float m_runWidthSoFar;
+    unsigned m_numGlyphsSoFar;
+    size_t m_currentRun;
+    unsigned m_glyphInCurrentRun;
+    unsigned m_characterInCurrentGlyph;
+    float m_finalRoundingWidth;
+    float m_padding;
+    float m_padPerSpace;
+
+    HashSet<const SimpleFontData*>* m_fallbackFonts;
+
+    unsigned m_lastRoundingGlyph;
+};
+
+} // namespace WebCore
+
+#endif // ComplexTextController_h