Unprefix usage of -webkit-transform in tests

LayoutTests/transitions/transition-end-event-multiple-04.html

Index: LayoutTests/transitions/transition-end-event-multiple-04.html
diff --git a/LayoutTests/transitions/transition-end-event-multiple-04.html b/LayoutTests/transitions/transition-end-event-multiple-04.html
index 623b1a1696f0d8437a1b0710309f18c49a89259f..ef56c63243c061ccd31b337c6fc8ab156c06a892 100644
--- a/LayoutTests/transitions/transition-end-event-multiple-04.html
+++ b/LayoutTests/transitions/transition-end-event-multiple-04.html
@@ -8,27 +8,27 @@
       width: 100px;
       margin: 10px;
       background-color: blue;
-      -webkit-transform: translate(0);
-      -webkit-transition-property: -webkit-transform;
+      transform: translate(0);
+      -webkit-transition-property: transform;
       -webkit-transition-duration: 0.5s;
     }
     
     .box1 {
-      -webkit-transform: translate(50px);
+      transform: translate(50px);
     }
     
     .box2 {
-      -webkit-transform: translate(50px) scale(1.05);
+      transform: translate(50px) scale(1.05);
       -webkit-transition-duration: 0.55s;
     }
     
     .box3 {
-      -webkit-transform: translate(0); /* same as default */
+      transform: translate(0); /* same as default */
       -webkit-transition-duration: 0.3s;
     }
 
     .box4 {
-      -webkit-transform: translate(100px);
+      transform: translate(100px);
       -webkit-transition-duration: 0.4s;
     }
 
@@ -42,9 +42,9 @@
     
     var expectedEndEvents = [
       // [property-name, element-id, elapsed-time, listen]
-      ["-webkit-transform", "box1", 0.5, false],
-      ["-webkit-transform", "box2", 0.55, false],
-      ["-webkit-transform", "box4", 0.4, false]
+      ["transform", "box1", 0.5, false],
+      ["transform", "box2", 0.55, false],
+      ["transform", "box4", 0.4, false]
     ];
   
     function transitionElement(index)