Unprefix usage of -webkit-transform in tests

LayoutTests/fast/transforms/transforms-with-zoom.html

Index: LayoutTests/fast/transforms/transforms-with-zoom.html
diff --git a/LayoutTests/fast/transforms/transforms-with-zoom.html b/LayoutTests/fast/transforms/transforms-with-zoom.html
index c3bb4747d6241c6008b1ac774c09793448da01dd..57eeb6c891f51eb7f0127dade31d9f2a3499edaa 100644
--- a/LayoutTests/fast/transforms/transforms-with-zoom.html
+++ b/LayoutTests/fast/transforms/transforms-with-zoom.html
@@ -25,13 +25,13 @@ body {
 }
 
 .translated1 {
-  -webkit-transform: translate(100px, 50px);
+  transform: translate(100px, 50px);
   background-color: green;
 }
 
 .translated2 {
   -webkit-transform-origin: 50px, 50px;
-  -webkit-transform: translate(250px, 50px) rotate(90deg);
+  transform: translate(250px, 50px) rotate(90deg);
   background-color: green;
 }