CSSValue Immediates: Make CSSPrimitiveValue a container

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 89 matching lines @@
             || unitType == LengthTypeCHS;
     }
     inline bool isRelative() const { return isRelativeUnit(unitType()); }
 
     bool isZero() const
     {
         return !m_valueInSpecifiedUnits;
     }
 
     static PassRefPtrWillBeRawPtr<SVGLength> fromCSSPrimitiveValue(CSSPrimitiveValue*);
-    static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> toCSSPrimitiveValue(PassRefPtrWillBeRawPtr<SVGLength>);
+    static CSSPrimitiveValue toCSSPrimitiveValue(PassRefPtrWillBeRawPtr<SVGLength>);
     static SVGLengthMode lengthModeForAnimatedLengthAttribute(const QualifiedName&);
 
     PassRefPtrWillBeRawPtr<SVGLength> blend(PassRefPtrWillBeRawPtr<SVGLength> from, float progress) const;
 
     void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) override;
     void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> from, PassRefPtrWillBeRawPtr<SVGPropertyBase> to, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) override;
     float calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement* contextElement) override;
 
     static AnimatedPropertyType classType() { return AnimatedLength; }
 
 private:
     SVGLength(SVGLengthMode);
     SVGLength(const SVGLength&);
 
     float m_valueInSpecifiedUnits;
     unsigned m_unitMode : 2;
     unsigned m_unitType : 4;
 };
 
 inline PassRefPtrWillBeRawPtr<SVGLength> toSVGLength(PassRefPtrWillBeRawPtr<SVGPropertyBase> passBase)
 {
     RefPtrWillBeRawPtr<SVGPropertyBase> base = passBase;
     ASSERT(base->type() == SVGLength::classType());
     return static_pointer_cast<SVGLength>(base.release());
 }
 
 } // namespace blink
 
 #endif // SVGLength_h