Unprefix usage of -webkit-transform in tests

LayoutTests/transforms/3d/hit-testing/rotated-hit-test2.html

Index: LayoutTests/transforms/3d/hit-testing/rotated-hit-test2.html
diff --git a/LayoutTests/transforms/3d/hit-testing/rotated-hit-test2.html b/LayoutTests/transforms/3d/hit-testing/rotated-hit-test2.html
index c008bbbcde8a739de6718ff31c2f842a7428e58d..057e607e9202ee9b143d39601833c107e1d8f988 100644
--- a/LayoutTests/transforms/3d/hit-testing/rotated-hit-test2.html
+++ b/LayoutTests/transforms/3d/hit-testing/rotated-hit-test2.html
@@ -22,25 +22,25 @@
     }
     
     #left {
-      -webkit-transform: rotateY(-75deg);
+      transform: rotateY(-75deg);
       left: 20px;
       top: 100px;
     }
 
     #top {
-      -webkit-transform: rotateX(75deg);
+      transform: rotateX(75deg);
       top: 20px;
       left: 100px;
     }
 
     #right {
-      -webkit-transform: rotateY(75deg);
+      transform: rotateY(75deg);
       left: 180px;
       top: 100px;
     }
 
     #bottom {
-      -webkit-transform: rotateX(-75deg);
+      transform: rotateX(-75deg);
       top: 180px;
       left: 100px;
     }