Use SVGLength's wrapped CSSPrimitiveValue for pres.attr. style

third_party/WebKit/Source/core/svg/SVGUseElement.cpp

Index: third_party/WebKit/Source/core/svg/SVGUseElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGUseElement.cpp b/third_party/WebKit/Source/core/svg/SVGUseElement.cpp
index 14e7350a601cc697b86c7088b442b1e4c88c0cf2..da3e27044ed0d8c9633d5b80f590105357f86222 100644
--- a/third_party/WebKit/Source/core/svg/SVGUseElement.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGUseElement.cpp
@@ -191,9 +191,9 @@ void SVGUseElement::collectStyleForPresentationAttribute(const QualifiedName& na
 {
     RefPtrWillBeRawPtr<SVGAnimatedPropertyBase> property = propertyFromAttribute(name);
     if (property == m_x)
-        addSVGLengthPropertyToPresentationAttributeStyle(style, CSSPropertyX, *m_x->currentValue());
+        addPropertyToPresentationAttributeStyle(style, CSSPropertyX, m_x->currentValue()->asCSSPrimitiveValue());
     else if (property == m_y)
-        addSVGLengthPropertyToPresentationAttributeStyle(style, CSSPropertyY, *m_y->currentValue());
+        addPropertyToPresentationAttributeStyle(style, CSSPropertyY, m_y->currentValue()->asCSSPrimitiveValue());
     else
         SVGGraphicsElement::collectStyleForPresentationAttribute(name, value, style);
 }