Mask/background-repeat: round should round the number of tiles of an image to the nearest natural n…

LayoutTests/css3/masking/mask-repeat-round-auto2-expected.html

Index: LayoutTests/css3/masking/mask-repeat-round-auto2-expected.html
diff --git a/LayoutTests/css3/masking/mask-repeat-round-auto2-expected.html b/LayoutTests/css3/masking/mask-repeat-round-auto2-expected.html
index ffaed2d0ad7c9e5286bc6b5c57599f87b6559eee..dce5cdd6d2fcf9fb58f6147c78e29f6e964bd160 100644
--- a/LayoutTests/css3/masking/mask-repeat-round-auto2-expected.html
+++ b/LayoutTests/css3/masking/mask-repeat-round-auto2-expected.html
@@ -14,7 +14,7 @@
                 border: 50px solid blue;
                 padding: 50px;
                 -webkit-mask-image: url(resources/circle.png);
-                -webkit-mask-size: 106px 85px;
+                -webkit-mask-size: 124px 100px;
                 -webkit-mask-repeat: repeat;
                 -webkit-mask-origin: border-box;
                 -webkit-mask-clip: border-box;