Resolve em units against the specified font size in SVG

Source/core/svg/SVGLengthContext.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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.
@@ skipping 210 matching lines @@
 }
 
 float SVGLengthContext::convertValueFromUserUnitsToEMS(float value, ExceptionCode& ec) const
 {
     RenderStyle* style = renderStyleForLengthResolving(m_context);
     if (!style) {
         ec = NotSupportedError;
         return 0;
     }
 
-    float fontSize = style->fontSize();
+    float fontSize = style->specifiedFontSize();
     if (!fontSize) {
         ec = NotSupportedError;
         return 0;
     }
 
     return value / fontSize;
 }
 
 float SVGLengthContext::convertValueFromEMSToUserUnits(float value, ExceptionCode& ec) const
 {
     RenderStyle* style = renderStyleForLengthResolving(m_context);
     if (!style) {
         ec = NotSupportedError;
         return 0;
     }
 
-    return value * style->fontSize();
+    return value * style->specifiedFontSize();
 }
 
 float SVGLengthContext::convertValueFromUserUnitsToEXS(float value, ExceptionCode& ec) const
 {
     RenderStyle* style = renderStyleForLengthResolving(m_context);
     if (!style) {
         ec = NotSupportedError;
         return 0;
     }
 
@@ skipping 46 matching lines @@
     FloatSize viewportSize = svg->currentViewBoxRect().size();
     if (viewportSize.isEmpty())
         viewportSize = svg->currentViewportSize();
 
     width = viewportSize.width();
     height = viewportSize.height();
     return true;
 }
 
 }