Unprefix usage of -webkit-transform in tests

LayoutTests/css3/filters/filter-change-repaint.html

Index: LayoutTests/css3/filters/filter-change-repaint.html
diff --git a/LayoutTests/css3/filters/filter-change-repaint.html b/LayoutTests/css3/filters/filter-change-repaint.html
index 79ce2cbd91a738707614d8c409367d77a171c0fe..b425b5e5c5fbfca63ffd4e1c6a01f1366b8d49e3 100644
--- a/LayoutTests/css3/filters/filter-change-repaint.html
+++ b/LayoutTests/css3/filters/filter-change-repaint.html
@@ -32,23 +32,23 @@
 
         .composited_from_software {
             /* force a composited layer */
-            -webkit-transform: translate3d(0, 0, 0);
+            transform: translate3d(0, 0, 0);
             -webkit-filter: drop-shadow(0px 0px 10px blue);
         }
 
         .composited_from_software.before {
-            -webkit-transform: none;
+            transform: none;
             -webkit-filter: drop-shadow(0px 0px 10px red);
         }
 
         .software_from_composited {
-            -webkit-transform: none;
+            transform: none;
             -webkit-filter: drop-shadow(0px 0px 10px blue);
         }
 
         .software_from_composited.before {
             /* force a composited layer */
-            -webkit-transform: translate3d(0, 0, 0);
+            transform: translate3d(0, 0, 0);
             -webkit-filter: drop-shadow(0px 0px 10px red);
         }