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diff --git a/WebCore/platform/graphics/SimpleFontData.cpp b/WebCore/platform/graphics/SimpleFontData.cpp
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+++ b/WebCore/platform/graphics/SimpleFontData.cpp
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+/*
+ * Copyright (C) 2005, 2008 Apple Computer, Inc.  All rights reserved.
+ * Copyright (C) 2006 Alexey Proskuryakov
+ *
+ * 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.
+ */
+
+#include "config.h"
+#include "SimpleFontData.h"
+
+#if ENABLE(SVG_FONTS)
+#include "SVGFontData.h"
+#include "SVGFontFaceElement.h"
+#endif
+
+#include <wtf/MathExtras.h>
+
+namespace WebCore {
+
+SimpleFontData::SimpleFontData(const FontPlatformData& f, bool customFont, bool loading, SVGFontData* svgFontData)
+    : m_font(f)
+    , m_treatAsFixedPitch(false)
+#if ENABLE(SVG_FONTS)
+    , m_svgFontData(svgFontData)
+#endif
+    , m_isCustomFont(customFont)
+    , m_isLoading(loading)
+    , m_smallCapsFontData(0)
+{
+#if ENABLE(SVG_FONTS) && !PLATFORM(QT)
+    if (SVGFontFaceElement* svgFontFaceElement = svgFontData ? svgFontData->svgFontFaceElement() : 0) {
+       m_unitsPerEm = svgFontFaceElement->unitsPerEm();
+
+       double scale = f.size();
+       if (m_unitsPerEm)
+           scale /= m_unitsPerEm;
+
+        m_ascent = static_cast<int>(svgFontFaceElement->ascent() * scale);
+        m_descent = static_cast<int>(svgFontFaceElement->descent() * scale);
+        m_xHeight = static_cast<int>(svgFontFaceElement->xHeight() * scale);
+        m_lineGap = 0.1f * f.size();
+        m_lineSpacing = m_ascent + m_descent + m_lineGap;
+    
+        m_spaceGlyph = 0;
+        m_spaceWidth = 0;
+        m_adjustedSpaceWidth = 0;
+        determinePitch();
+        m_missingGlyphData.fontData = this;
+        m_missingGlyphData.glyph = 0;
+        return;
+    }
+#endif
+
+    platformInit();
+
+    GlyphPage* glyphPageZero = GlyphPageTreeNode::getRootChild(this, 0)->page();
+    if (!glyphPageZero) {
+        LOG_ERROR("Failed to get glyph page zero.");
+        m_spaceGlyph = 0;
+        m_spaceWidth = 0;
+        m_adjustedSpaceWidth = 0;
+        determinePitch();
+        m_missingGlyphData.fontData = this;
+        m_missingGlyphData.glyph = 0;
+        return;
+    }
+
+    // Nasty hack to determine if we should round or ceil space widths.
+    // If the font is monospace or fake monospace we ceil to ensure that 
+    // every character and the space are the same width.  Otherwise we round.
+    m_spaceGlyph = glyphPageZero->glyphDataForCharacter(' ').glyph;
+    float width = widthForGlyph(m_spaceGlyph);
+    m_spaceWidth = width;
+    determinePitch();
+    m_adjustedSpaceWidth = m_treatAsFixedPitch ? ceilf(width) : roundf(width);
+
+    // Force the glyph for ZERO WIDTH SPACE to have zero width, unless it is shared with SPACE.
+    // Helvetica is an example of a non-zero width ZERO WIDTH SPACE glyph.
+    // See <http://bugs.webkit.org/show_bug.cgi?id=13178>
+    // Ask for the glyph for 0 to avoid paging in ZERO WIDTH SPACE. Control characters, including 0,
+    // are mapped to the ZERO WIDTH SPACE glyph.
+    Glyph zeroWidthSpaceGlyph = glyphPageZero->glyphDataForCharacter(0).glyph;
+    if (zeroWidthSpaceGlyph) {
+        if (zeroWidthSpaceGlyph != m_spaceGlyph)
+            m_glyphToWidthMap.setWidthForGlyph(zeroWidthSpaceGlyph, 0);
+        else
+            LOG_ERROR("Font maps SPACE and ZERO WIDTH SPACE to the same glyph. Glyph width not overridden.");
+    }
+
+    m_missingGlyphData.fontData = this;
+    m_missingGlyphData.glyph = 0;
+}
+
+SimpleFontData::~SimpleFontData()
+{
+#if ENABLE(SVG_FONTS) && !PLATFORM(QT)
+    if (!m_svgFontData || !m_svgFontData->svgFontFaceElement())
+#endif
+        platformDestroy();
+
+    // We only get deleted when the cache gets cleared.  Since the smallCapsRenderer is also in that cache,
+    // it will be deleted then, so we don't need to do anything here.
+}
+
+float SimpleFontData::widthForGlyph(Glyph glyph) const
+{
+    float width = m_glyphToWidthMap.widthForGlyph(glyph);
+    if (width != cGlyphWidthUnknown)
+        return width;
+    
+    width = platformWidthForGlyph(glyph);
+    m_glyphToWidthMap.setWidthForGlyph(glyph, width);
+    
+    return width;
+}
+
+const SimpleFontData* SimpleFontData::fontDataForCharacter(UChar32) const
+{
+    return this;
+}
+
+bool SimpleFontData::isSegmented() const
+{
+    return false;
+}
+
+} // namespace WebCore