CSS Animations: Remove unnecessary webkit prefixes from layout tests

third_party/WebKit/LayoutTests/animations/missing-from-to.html

Index: third_party/WebKit/LayoutTests/animations/missing-from-to.html
diff --git a/third_party/WebKit/LayoutTests/animations/missing-from-to.html b/third_party/WebKit/LayoutTests/animations/missing-from-to.html
index 79d21d3499c806a121952b062e835c8ccc3f8298..e3beec23b117fc9e10fdd32a132d1bc40933d4a2 100644
--- a/third_party/WebKit/LayoutTests/animations/missing-from-to.html
+++ b/third_party/WebKit/LayoutTests/animations/missing-from-to.html
@@ -13,14 +13,14 @@
       height: 20px;
       width: 20px;
       background-color: blue;
-      -webkit-animation-duration: 2s;
-      -webkit-animation-timing-function: linear;
+      animation-duration: 2s;
+      animation-timing-function: linear;
     }
   
     #box1 {
-      -webkit-animation-name: anim1;
+      animation-name: anim1;
     }
-    @-webkit-keyframes anim1 {
+    @keyframes anim1 {
         from { left: 10px; }
         40% { left: 30px; }
         60% { left: 10px; }
@@ -28,10 +28,10 @@
     }
 
     #box2 {
-      -webkit-animation-name: anim2;
+      animation-name: anim2;
       background-color: red;
     }
-    @-webkit-keyframes anim2 {
+    @keyframes anim2 {
         40% { left: 30px; }
         60% { left: 10px; }
         to { left: 20px; }
@@ -39,20 +39,20 @@
 
     #box3 {
       left: 20px;
-      -webkit-animation-name: anim3;
+      animation-name: anim3;
       background-color: green;
     }
-    @-webkit-keyframes anim3 {
+    @keyframes anim3 {
         from { left: 10px; }
         40% { left: 30px; }
         60% { left: 10px; }
     }
 
     #box4 {
-      -webkit-animation-name: anim4;
+      animation-name: anim4;
       background-color: yellow;
     }
-    @-webkit-keyframes anim4 {
+    @keyframes anim4 {
         40% { left: 30px; }
         60% { left: 20px; }
     }