[svg2] Make SVGLength wrap a CSSPrimitiveValue

Source/core/svg/SVGLengthList.cpp

 /*
  * Copyright (C) 2004, 2005, 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 134 matching lines @@
 
     size_t fromLengthListSize = fromList->length();
     size_t toLengthListSize = toList->length();
     size_t toAtEndOfDurationListSize = toAtEndOfDurationList->length();
 
     if (!adjustFromToListValues(fromList, toList, percentage, animationElement->animationMode()))
         return;
 
     for (size_t i = 0; i < toLengthListSize; ++i) {
         float animatedNumber = at(i)->value(lengthContext);
-        SVGLengthType unitType = toList->at(i)->unitType();
+        CSSPrimitiveValue::UnitType unitType = toList->at(i)->getCSSPrimitiveValue()->primitiveType();
         float effectiveFrom = 0;
         if (fromLengthListSize) {
             if (percentage < 0.5)
-                unitType = fromList->at(i)->unitType();
+                unitType = fromList->at(i)->getCSSPrimitiveValue()->primitiveType();
             effectiveFrom = fromList->at(i)->value(lengthContext);
         }
         float effectiveTo = toList->at(i)->value(lengthContext);
         float effectiveToAtEnd = i < toAtEndOfDurationListSize ? toAtEndOfDurationList->at(i)->value(lengthContext) : 0;
 
         animationElement->animateAdditiveNumber(percentage, repeatCount, effectiveFrom, effectiveTo, effectiveToAtEnd, animatedNumber);
         at(i)->setUnitType(unitType);
         at(i)->setValue(animatedNumber, lengthContext);
     }
 }
 
 float SVGLengthList::calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement*)
 {
     // FIXME: Distance calculation is not possible for SVGLengthList right now. We need the distance for every single value.
     return -1;
 }
 }