Add toSVGLengthType() and toSVGLengthMode() fuctions, and use it.

Source/core/svg/SVGLength.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * 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,
@@ skipping 150 matching lines @@
     float m_valueInSpecifiedUnits;
     unsigned int m_unit;
 };
 
 template<>
 struct SVGPropertyTraits<SVGLength> {
     static SVGLength initialValue() { return SVGLength(); }
     static String toString(const SVGLength& type) { return type.valueAsString(); }
 };
 
+inline SVGLengthMode toSVGLengthMode(unsigned short mode)

[tkent, 2013/09/12 22:40:34]

We must need this type conversion only in SVGLength.cpp. We should implement
this function in SVGLength.cpp.

+{
+    ASSERT_WITH_SECURITY_IMPLICATION(!mode || mode > LengthModeOther);

[tkent, 2013/09/12 22:40:34]

I don't think this has security implication. Also, the assertion looks wrong.

+    return static_cast<SVGLengthMode>(mode);
+}
+
+inline SVGLengthType toSVGLengthType(unsigned short type)

[tkent, 2013/09/12 22:40:34]

Same comments.

+{
+    ASSERT_WITH_SECURITY_IMPLICATION(!type || (type == LengthTypeUnknown || type > LengthTypePC));
+    return static_cast<SVGLengthType>(type);
+}
 
 } // namespace WebCore
 
 #endif // SVGLength_h