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diff --git a/Source/WebCore/svg/SVGFontElement.h b/Source/WebCore/svg/SVGFontElement.h
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+++ b/Source/WebCore/svg/SVGFontElement.h
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+/*
+ * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
+ * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
+ * Copyright (C) Research In Motion Limited 2010. 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 SVGFontElement_h
+#define SVGFontElement_h
+
+#if ENABLE(SVG_FONTS)
+#include "SVGAnimatedBoolean.h"
+#include "SVGExternalResourcesRequired.h"
+#include "SVGGlyphElement.h"
+#include "SVGGlyphMap.h"
+#include "SVGParserUtilities.h"
+#include "SVGStyledElement.h"
+
+namespace WebCore {
+
+// Describe an SVG <hkern>/<vkern> element
+struct SVGKerningPair {
+    float kerning;
+    UnicodeRanges unicodeRange1;
+    UnicodeRanges unicodeRange2;
+    HashSet<String> unicodeName1;
+    HashSet<String> unicodeName2;
+    HashSet<String> glyphName1;
+    HashSet<String> glyphName2;
+    
+    SVGKerningPair()
+        : kerning(0.0f)
+    {
+    }
+};
+
+typedef Vector<SVGKerningPair> KerningPairVector;
+
+class SVGMissingGlyphElement;    
+
+class SVGFontElement : public SVGStyledElement
+                     , public SVGExternalResourcesRequired {
+public:
+    static PassRefPtr<SVGFontElement> create(const QualifiedName&, Document*);
+
+    void invalidateGlyphCache();
+
+    void getGlyphIdentifiersForString(const String&, Vector<SVGGlyphIdentifier>&) const;
+
+    float horizontalKerningForPairOfStringsAndGlyphs(const String& u1, const String& g1, const String& u2, const String& g2) const;
+    float verticalKerningForPairOfStringsAndGlyphs(const String& u1, const String& g1, const String& u2, const String& g2) const;
+    
+    SVGMissingGlyphElement* firstMissingGlyphElement() const;
+
+private:
+    SVGFontElement(const QualifiedName&, Document*);
+
+    virtual void synchronizeProperty(const QualifiedName&);
+    virtual bool rendererIsNeeded(RenderStyle*) { return false; }    
+
+    void ensureGlyphCache() const;
+
+    // Animated property declarations
+
+    // SVGExternalResourcesRequired
+    DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
+
+    mutable KerningPairVector m_horizontalKerningPairs;
+    mutable KerningPairVector m_verticalKerningPairs;
+    mutable SVGGlyphMap m_glyphMap;
+    mutable bool m_isGlyphCacheValid;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(SVG_FONTS)
+#endif