Layout support for new ellipse shape syntax

LayoutTests/fast/shapes/shape-inside/shape-inside-animation.html

Index: LayoutTests/fast/shapes/shape-inside/shape-inside-animation.html
diff --git a/LayoutTests/fast/shapes/shape-inside/shape-inside-animation.html b/LayoutTests/fast/shapes/shape-inside/shape-inside-animation.html
index b3b901214ca9e5b3c9c33f89229c99c88fbe86e1..c47ee118894fcae37f01ba30b32f84993bd5c042 100644
--- a/LayoutTests/fast/shapes/shape-inside/shape-inside-animation.html
+++ b/LayoutTests/fast/shapes/shape-inside/shape-inside-animation.html
@@ -38,8 +38,8 @@
     }
 
     @-webkit-keyframes ellipse-anim {
-        from { shape-inside: ellipse(50%, 50%, 50%, 40%); }
-        to   { shape-inside: ellipse(20%, 20%, 20%, 20%); }
+        from { shape-inside: ellipse(50% 40% at 50% 50%); }
+        to   { shape-inside: ellipse(20% 20% at 20% 20%); }
     }
 
     @-webkit-keyframes polygon-anim {
@@ -54,7 +54,7 @@
       // [time, element-id, property, expected-value, tolerance]
       [1, "rectangle-box", "shapeInside", "rectangle(10%, 10%, 80%, 80%, 0px, 0px)", 0.05],
       [1, "circle-box", "shapeInside", "circle(35% at 35% 35%)", 0.05],
-      [1, "ellipse-box", "shapeInside", "ellipse(35%, 35%, 35%, 30%)", 0.05],
+      [1, "ellipse-box", "shapeInside", "ellipse(35% 30% at 35% 35%)", 0.05],
       [1, "polygon-box", "shapeInside", "polygon(nonzero, 10% 10%, 90% 10%, 90% 90%, 10% 90%)", 0.05],
     ];