[SVG] SVGLength{,List} migration to new SVG property impl.

Source/core/svg/SVGTextPathElement.cpp

Index: Source/core/svg/SVGTextPathElement.cpp
diff --git a/Source/core/svg/SVGTextPathElement.cpp b/Source/core/svg/SVGTextPathElement.cpp
index b3f2e1b1fb4298ffa56bb88e1e4f995453e4de34..b17691bbe57c07244a061a5dda89ad86f50f2085 100644
--- a/Source/core/svg/SVGTextPathElement.cpp
+++ b/Source/core/svg/SVGTextPathElement.cpp
@@ -30,13 +30,11 @@
 namespace WebCore {
 
 // Animated property definitions
-DEFINE_ANIMATED_LENGTH(SVGTextPathElement, SVGNames::startOffsetAttr, StartOffset, startOffset)
 DEFINE_ANIMATED_ENUMERATION(SVGTextPathElement, SVGNames::methodAttr, Method, method, SVGTextPathMethodType)
 DEFINE_ANIMATED_ENUMERATION(SVGTextPathElement, SVGNames::spacingAttr, Spacing, spacing, SVGTextPathSpacingType)
 DEFINE_ANIMATED_STRING(SVGTextPathElement, XLinkNames::hrefAttr, Href, href)
 
 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGTextPathElement)
-    REGISTER_LOCAL_ANIMATED_PROPERTY(startOffset)
     REGISTER_LOCAL_ANIMATED_PROPERTY(method)
     REGISTER_LOCAL_ANIMATED_PROPERTY(spacing)
     REGISTER_LOCAL_ANIMATED_PROPERTY(href)
@@ -45,11 +43,13 @@ END_REGISTER_ANIMATED_PROPERTIES
 
 inline SVGTextPathElement::SVGTextPathElement(Document& document)
     : SVGTextContentElement(SVGNames::textPathTag, document)
-    , m_startOffset(LengthModeOther)
+    , m_startOffset(SVGAnimatedLength::create(this, SVGNames::startOffsetAttr, SVGLength::create(LengthModeOther)))
     , m_method(SVGTextPathMethodAlign)
     , m_spacing(SVGTextPathSpacingExact)
 {
     ScriptWrappable::init(this);
+
+    addToPropertyMap(m_startOffset);
     registerAnimatedPropertiesForSVGTextPathElement();
 }
 
@@ -87,7 +87,7 @@ void SVGTextPathElement::parseAttribute(const QualifiedName& name, const AtomicS
     if (!isSupportedAttribute(name))
         SVGTextContentElement::parseAttribute(name, value);
     else if (name == SVGNames::startOffsetAttr)
-        setStartOffsetBaseValue(SVGLength::construct(LengthModeOther, value, parseError));
+        m_startOffset->setBaseValueAsString(value, AllowNegativeLengths, parseError);
     else if (name == SVGNames::methodAttr) {
         SVGTextPathMethodType propertyValue = SVGPropertyTraits<SVGTextPathMethodType>::fromString(value);
         if (propertyValue > 0)
@@ -189,7 +189,7 @@ void SVGTextPathElement::removedFrom(ContainerNode* rootParent)
 
 bool SVGTextPathElement::selfHasRelativeLengths() const
 {
-    return startOffsetCurrentValue().isRelative()
+    return m_startOffset->currentValue()->isRelative()
         || SVGTextContentElement::selfHasRelativeLengths();
 }