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diff --git a/WebCore/platform/graphics/GlyphBuffer.h b/WebCore/platform/graphics/GlyphBuffer.h
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+/*
+ * Copyright (C) 2006 Apple Computer, 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. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE 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 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 GlyphBuffer_h
+#define GlyphBuffer_h
+
+#include "FloatSize.h"
+
+#if PLATFORM(CG)
+#include <ApplicationServices/ApplicationServices.h>
+#elif PLATFORM(CAIRO)
+#include <cairo.h>
+#endif
+
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+typedef unsigned short Glyph;
+class SimpleFontData;
+
+#if PLATFORM(CAIRO)
+// FIXME: Why does Cairo use such a huge struct instead of just an offset into an array?
+typedef cairo_glyph_t GlyphBufferGlyph;
+#else
+typedef Glyph GlyphBufferGlyph;
+#endif
+
+// CG uses CGSize instead of FloatSize so that the result of advances()
+// can be passed directly to CGContextShowGlyphsWithAdvances in FontMac.mm
+#if PLATFORM(CG)
+typedef CGSize GlyphBufferAdvance;
+#else
+typedef FloatSize GlyphBufferAdvance;
+#endif
+
+class GlyphBuffer {
+public:
+    bool isEmpty() const { return m_fontData.isEmpty(); }
+    int size() const { return m_fontData.size(); }
+    
+    void clear()
+    {
+        m_fontData.clear();
+        m_glyphs.clear();
+        m_advances.clear();
+#if PLATFORM(WIN)
+        m_offsets.clear();
+#endif
+    }
+
+    GlyphBufferGlyph* glyphs(int from) { return m_glyphs.data() + from; }
+    GlyphBufferAdvance* advances(int from) { return m_advances.data() + from; }
+    const GlyphBufferGlyph* glyphs(int from) const { return m_glyphs.data() + from; }
+    const GlyphBufferAdvance* advances(int from) const { return m_advances.data() + from; }
+
+    const SimpleFontData* fontDataAt(int index) const { return m_fontData[index]; }
+    
+    void swap(int index1, int index2)
+    {
+        const SimpleFontData* f = m_fontData[index1];
+        m_fontData[index1] = m_fontData[index2];
+        m_fontData[index2] = f;
+
+        GlyphBufferGlyph g = m_glyphs[index1];
+        m_glyphs[index1] = m_glyphs[index2];
+        m_glyphs[index2] = g;
+
+        GlyphBufferAdvance s = m_advances[index1];
+        m_advances[index1] = m_advances[index2];
+        m_advances[index2] = s;
+
+#if PLATFORM(WIN)
+        FloatSize offset = m_offsets[index1];
+        m_offsets[index1] = m_offsets[index2];
+        m_offsets[index2] = offset;
+#endif
+    }
+
+    Glyph glyphAt(int index) const
+    {
+#if PLATFORM(CAIRO)
+        return m_glyphs[index].index;
+#else
+        return m_glyphs[index];
+#endif
+    }
+
+    float advanceAt(int index) const
+    {
+#if PLATFORM(CG)
+        return m_advances[index].width;
+#else
+        return m_advances[index].width();
+#endif
+    }
+
+    FloatSize offsetAt(int index) const
+    {
+#if PLATFORM(WIN)
+        return m_offsets[index];
+#else
+        return FloatSize();
+#endif
+    }
+
+    void add(Glyph glyph, const SimpleFontData* font, float width, const FloatSize* offset = 0)
+    {
+        m_fontData.append(font);
+#if PLATFORM(CAIRO)
+        cairo_glyph_t cairoGlyph;
+        cairoGlyph.index = glyph;
+        m_glyphs.append(cairoGlyph);
+#else
+        m_glyphs.append(glyph);
+#endif
+
+#if PLATFORM(CG)
+        CGSize advance = { width, 0 };
+        m_advances.append(advance);
+#else
+        m_advances.append(FloatSize(width, 0));
+#endif
+
+#if PLATFORM(WIN)
+        if (offset)
+            m_offsets.append(*offset);
+        else
+            m_offsets.append(FloatSize());
+#endif
+    }
+    
+    void add(Glyph glyph, const SimpleFontData* font, GlyphBufferAdvance advance)
+    {
+        m_fontData.append(font);
+#if PLATFORM(CAIRO)
+        cairo_glyph_t cairoGlyph;
+        cairoGlyph.index = glyph;
+        m_glyphs.append(cairoGlyph);
+#else
+        m_glyphs.append(glyph);
+#endif
+
+        m_advances.append(advance);
+    }
+    
+private:
+    Vector<const SimpleFontData*, 2048> m_fontData;
+    Vector<GlyphBufferGlyph, 2048> m_glyphs;
+    Vector<GlyphBufferAdvance, 2048> m_advances;
+#if PLATFORM(WIN)
+    Vector<FloatSize, 2048> m_offsets;
+#endif
+};
+
+}
+#endif