Unprefix usage of -webkit-transform in tests

LayoutTests/animations/keyframe-timing-functions-transform.html

Index: LayoutTests/animations/keyframe-timing-functions-transform.html
diff --git a/LayoutTests/animations/keyframe-timing-functions-transform.html b/LayoutTests/animations/keyframe-timing-functions-transform.html
index 42fce02d158c8bb2f78f077adfb4e2f6cd448c5d..d0adc90d0d450ece0532147a8110c0fbbd78f76e 100644
--- a/LayoutTests/animations/keyframe-timing-functions-transform.html
+++ b/LayoutTests/animations/keyframe-timing-functions-transform.html
@@ -22,19 +22,19 @@
 
     @-webkit-keyframes move {
       0%   {
-        -webkit-transform: translateX(0);
+        transform: translateX(0);
         -webkit-animation-timing-function: ease-out;
       }
       10% {
-        -webkit-transform: translateX(100px);
+        transform: translateX(100px);
         -webkit-animation-timing-function: linear;
       }
       90% {
-        -webkit-transform: translateX(500px);
+        transform: translateX(500px);
         -webkit-animation-timing-function: ease-in;
       }
       100% {
-        -webkit-transform: translateX(600px);
+        transform: translateX(600px);
       }
     }