Unprefix usage of -webkit-transform in tests

ManualTests/animation/compositor-animation-iteration-count.html

Index: ManualTests/animation/compositor-animation-iteration-count.html
diff --git a/ManualTests/animation/compositor-animation-iteration-count.html b/ManualTests/animation/compositor-animation-iteration-count.html
index 9951ce2532a1da46ef38b70e06cb5642562d1c4b..a6659c2ff0f4f34f4f16a4968da1dd237f4c9d0e 100644
--- a/ManualTests/animation/compositor-animation-iteration-count.html
+++ b/ManualTests/animation/compositor-animation-iteration-count.html
@@ -5,7 +5,7 @@ div {
     height: 100px;
     width: 100px;
     background: blue;
-    -webkit-transform: translateZ(0);
+    transform: translateZ(0);
     -webkit-animation-direction: alternate;
     -webkit-animation-duration: 2s;
     -webkit-animation-timing-function: linear;
@@ -57,10 +57,10 @@ div {
 
 @-webkit-keyframes anim-transform {
     0% {
-        -webkit-transform: translateX(0px);
+        transform: translateX(0px);
     }
     100% {
-        -webkit-transform: translateX(300px);
+        transform: translateX(300px);
     }
 }
 </style>