Unprefix usage of -webkit-transform in tests

LayoutTests/animations/3d/replace-filling-transform.html

Index: LayoutTests/animations/3d/replace-filling-transform.html
diff --git a/LayoutTests/animations/3d/replace-filling-transform.html b/LayoutTests/animations/3d/replace-filling-transform.html
index 04b87a369068bc071530a0068aaae059e3047f65..d3fec93ee7e03c258a1051939dc89ec317afddc4 100644
--- a/LayoutTests/animations/3d/replace-filling-transform.html
+++ b/LayoutTests/animations/3d/replace-filling-transform.html
@@ -15,24 +15,24 @@
              height: 100px;
              width: 100px;
              background-color: red;
-             -webkit-transform: translate3d(50px, 200px, 0);
+             transform: translate3d(50px, 200px, 0);
          }
 
          @-webkit-keyframes anim1 {
            from {
-             -webkit-transform: translate3d(100px, 0, 0);
+             transform: translate3d(100px, 0, 0);
            }
            to {
-             -webkit-transform: translate3d(200px, 0, 0);
+             transform: translate3d(200px, 0, 0);
            }
          }
 
          @-webkit-keyframes anim2 {
            from {
-             -webkit-transform: translate3d(50px, 0, 0);
+             transform: translate3d(50px, 0, 0);
            }
            to {
-             -webkit-transform: translate3d(50px, 200px, 0);
+             transform: translate3d(50px, 200px, 0);
            }
          }
     </style>