Remove unnecessary webkit prefixes from animation layout tests

third_party/WebKit/LayoutTests/compositing/animation/state-at-end-event-transform-layer.html

Index: third_party/WebKit/LayoutTests/compositing/animation/state-at-end-event-transform-layer.html
diff --git a/third_party/WebKit/LayoutTests/compositing/animation/state-at-end-event-transform-layer.html b/third_party/WebKit/LayoutTests/compositing/animation/state-at-end-event-transform-layer.html
index db7c016d8ffa9a6fecf344fceb354dca8a2e894d..51c54a3811bfe25a3baf0a7b71d67de56a41f1e5 100644
--- a/third_party/WebKit/LayoutTests/compositing/animation/state-at-end-event-transform-layer.html
+++ b/third_party/WebKit/LayoutTests/compositing/animation/state-at-end-event-transform-layer.html
@@ -26,15 +26,15 @@
     }
 
     #container.moved .hardware {
-      -webkit-animation: move 300ms linear;
+      animation: move 300ms linear;
     }
 
     .hardware {
-      -webkit-transform-style: preserve-3d;
+      transform-style: preserve-3d;
       transform: translate3d(10px, 0, 0);
     }
 
-    @-webkit-keyframes move {
+    @keyframes move {
       from { transform: translate3d(10px, 0, 0); }
       to   { transform: translate3d(300px, 0, 0); }
     }
@@ -52,7 +52,7 @@
       if (window.testRunner)
         testRunner.waitUntilDone();
 
-      document.getElementById('tester').addEventListener('webkitAnimationEnd', testEnded, false);
+      document.getElementById('tester').addEventListener('animationend', testEnded, false);
       document.getElementById('container').className = 'moved';
     }