Add support for new canvas ellipse method.

LayoutTests/fast/canvas/arc-crash.html

Index: LayoutTests/fast/canvas/arc-crash.html
diff --git a/LayoutTests/fast/canvas/arc-crash.html b/LayoutTests/fast/canvas/arc-crash.html
index d5ac97d0aff315c209762b04bcd35f7b8f6df733..4673cc7c945627ea40bcd0cd90679dc3fc3d8d6d 100644
--- a/LayoutTests/fast/canvas/arc-crash.html
+++ b/LayoutTests/fast/canvas/arc-crash.html
@@ -13,17 +13,17 @@ function runTests() {
     context.fillStyle = '#f00';
     context.fillRect(0, 0, canvas.width, canvas.height);
     try {
-        context.arc(10, 10, 20, 20, 1.0/0.0, true);
-        context.arc(10, 10, 20, 20, 1.0/0.0, true);
-        context.arc(10, 10, 1.0/0.0, 20, 20, true);
-        context.arc(10, 10, 20, 1.0/0.0, 20, true);
-        context.arc(10, 1.0/0.0, 10, 20, 20, true);
-        context.arc(1.0/0.0, 10, 10, 20, 20, true);
-        context.arc(10, 10, 20, 20, 1.0/0.0, false);
-        context.arc(10, 10, 1.0/0.0, 20, 20, false);
-        context.arc(10, 10, 20, 1.0/0.0, 20, false);
-        context.arc(10, 1.0/0.0, 10, 20, 20, false);
-        context.arc(1.0/0.0, 10, 10, 20, 20, false);
+        context.arc(10, 10, 20, 20, Math.Infinite, true);
+        context.arc(10, 10, 20, 20, Math.Infinite, true);
+        context.arc(10, 10, Math.Infinite, 20, 20, true);
+        context.arc(10, 10, 20, Math.Infinite, 20, true);
+        context.arc(10, Math.Infinite, 10, 20, 20, true);
+        context.arc(Math.Infinite, 10, 10, 20, 20, true);
+        context.arc(10, 10, 20, 20, Math.Infinite, false);
+        context.arc(10, 10, Math.Infinite, 20, 20, false);
+        context.arc(10, 10, 20, Math.Infinite, 20, false);
+        context.arc(10, Math.Infinite, 10, 20, 20, false);
+        context.arc(Math.Infinite, 10, 10, 20, 20, false);
     } catch (e) {
     }
     context.fillStyle = '#0f0';