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

Source/core/svg/SVGAnimatorFactory.h

Index: Source/core/svg/SVGAnimatorFactory.h
diff --git a/Source/core/svg/SVGAnimatorFactory.h b/Source/core/svg/SVGAnimatorFactory.h
index 8223ce68b635c41c36e19dbdab7a358af8a83609..c67f27c40b6dddcd7e036246a9f15ebfe6637534 100644
--- a/Source/core/svg/SVGAnimatorFactory.h
+++ b/Source/core/svg/SVGAnimatorFactory.h
@@ -54,8 +54,6 @@ public:
             return adoptPtr(new SVGAnimatedIntegerOptionalIntegerAnimator(animationElement, contextElement));
         case AnimatedPath:
             return adoptPtr(new SVGAnimatedPathAnimator(animationElement, contextElement));
-        case AnimatedString:
-            return adoptPtr(new SVGAnimatedStringAnimator(animationElement, contextElement));
         case AnimatedTransformList:
             return adoptPtr(new SVGAnimatedTransformListAnimator(animationElement, contextElement));
         // Below properties have migrated to new property implementation.
@@ -66,13 +64,15 @@ public:
         case AnimatedNumberOptionalNumber:
         case AnimatedLength:
         case AnimatedLengthList:
-        case AnimatedRect:
         case AnimatedPoints:
         case AnimatedPreserveAspectRatio:
+        case AnimatedRect:
+        case AnimatedString:
             return adoptPtr(new SVGAnimatedNewPropertyAnimator(attributeType, animationElement, contextElement));
 
-        // SVGAnimatedPoint does not exist.
+        // SVGAnimatedPoint/SVGAnimatedStringList does not exist.
         case AnimatedPoint:
+        case AnimatedStringList:
             ASSERT_NOT_REACHED();
 
         case AnimatedUnknown: