Unprefix usage of -webkit-transform in tests

LayoutTests/compositing/reflections/reflection-in-composited.html

Index: LayoutTests/compositing/reflections/reflection-in-composited.html
diff --git a/LayoutTests/compositing/reflections/reflection-in-composited.html b/LayoutTests/compositing/reflections/reflection-in-composited.html
index ca8b65094d16704e36e6279c467c8d1407996327..73a77178d00c9ba3040bb7f8345c643ae10bb752 100644
--- a/LayoutTests/compositing/reflections/reflection-in-composited.html
+++ b/LayoutTests/compositing/reflections/reflection-in-composited.html
@@ -9,7 +9,7 @@
         height: 150px;
         padding: 10px 20px;
         border: 1px solid black;
-        -webkit-transform: translateZ(0);
+        transform: translateZ(0);
       }
       
       .positioned {
@@ -20,7 +20,7 @@
         background-color: #DDD;
         padding: 10px;
         -webkit-box-reflect: left 10px;
-        -webkit-transform: rotate(-40deg);
+        transform: rotate(-40deg);
       }
 
     </style>