Separate out animations tests with prefixing

third_party/WebKit/LayoutTests/animations/animation-shorthand-removed.html

Index: third_party/WebKit/LayoutTests/animations/animation-shorthand-removed.html
diff --git a/third_party/WebKit/LayoutTests/animations/animation-shorthand-removed.html b/third_party/WebKit/LayoutTests/animations/animation-shorthand-removed.html
index c0978562cd12ddeff0b4cf7c101dc00b03bb2edb..9d2af2a0f4151b44ddaf6acb5e4050b981b499db 100644
--- a/third_party/WebKit/LayoutTests/animations/animation-shorthand-removed.html
+++ b/third_party/WebKit/LayoutTests/animations/animation-shorthand-removed.html
@@ -8,7 +8,7 @@
   background-color: blue;
 }
 
-@-webkit-keyframes anim1 { }
+@keyframes anim1 { }
 </style>
   <script type="text/javascript" charset="utf-8">
     if (window.testRunner) {
@@ -17,13 +17,13 @@
     }
 
     const kProperties = [
-      "webkitAnimationName",
-      "webkitAnimationDuration",
-      "webkitAnimationTimingFunction",
-      "webkitAnimationDelay",
-      "webkitAnimationIterationCount",
-      "webkitAnimationDirection",
-      "webkitAnimationFillMode"
+      "animationName",
+      "animationDuration",
+      "animationTimingFunction",
+      "animationDelay",
+      "animationIterationCount",
+      "animationDirection",
+      "animationFillMode"
     ];
     const kElements = [
       { id: "a",
@@ -66,7 +66,7 @@
     function remove() {
       kElements.forEach(function(curEl) {
         var el = document.getElementById(curEl.id);
-        el.style.removeProperty("-webkit-animation");
+        el.style.removeProperty("animation");
       });
       setTimeout(test, 0);
     }