CSS manual tests: reduce usage of webkit prefix

third_party/WebKit/ManualTests/animation/transition-on-and-offscreen-animation.html

Index: third_party/WebKit/ManualTests/animation/transition-on-and-offscreen-animation.html
diff --git a/third_party/WebKit/ManualTests/animation/transition-on-and-offscreen-animation.html b/third_party/WebKit/ManualTests/animation/transition-on-and-offscreen-animation.html
index e41f0fe62e4b11f27c1aab3b90f673b04ba69806..28d0db9fe6d039c27cb83cc3cc69e8b83d1ddacb 100644
--- a/third_party/WebKit/ManualTests/animation/transition-on-and-offscreen-animation.html
+++ b/third_party/WebKit/ManualTests/animation/transition-on-and-offscreen-animation.html
@@ -12,7 +12,7 @@
       width: 200px;
       border: 1px solid black;
       background-color : red;
-      -webkit-transition: -webkit-transform 3s;
+      transition: transform 3s;
     }
     
   </style>
@@ -22,19 +22,19 @@
       var box = document.getElementById("box");
 
       window.setTimeout(function() {
-        box.style.webkitTransform = "translateX(" + window.innerWidth * 2.5 + "px)";
+        box.style.transform = "translateX(" + window.innerWidth * 2.5 + "px)";
       }, 3000);
       
       window.setTimeout(function() {
-        box.style.webkitTransform = "translateX(0px)";
+        box.style.transform = "translateX(0px)";
       }, 6000);
 
       window.setTimeout(function() {
-        box.style.webkitTransform = "translateX(" + window.innerWidth * 2.5 + "px)";
+        box.style.transform = "translateX(" + window.innerWidth * 2.5 + "px)";
       }, 9000);
 
       window.setTimeout(function() {
-        box.style.webkitTransform = "translateX(0px)";
+        box.style.transform = "translateX(0px)";
       }, 12000);
     }
     window.addEventListener('load', runTest, false)