Unprefix usage of -webkit-transform in tests

LayoutTests/animations/animation-welcome-safari.html

Index: LayoutTests/animations/animation-welcome-safari.html
diff --git a/LayoutTests/animations/animation-welcome-safari.html b/LayoutTests/animations/animation-welcome-safari.html
index 9fcfb01f292d48282fbcdd39a0941ae3744e47d7..649231c2dd4d7eb98ce7c36b15d8a586519558e9 100644
--- a/LayoutTests/animations/animation-welcome-safari.html
+++ b/LayoutTests/animations/animation-welcome-safari.html
@@ -15,61 +15,61 @@
 @-webkit-keyframes red {
 	from {
 		opacity: 0;
-		-webkit-transform: scale(3);
+		transform: scale(3);
 	}
 	22% {
 		opacity: 1;
-		-webkit-transform: scale(1.1);
+		transform: scale(1.1);
 	}
 	30% {
 		opacity: 1;
-		-webkit-transform: scale(1);
+		transform: scale(1);
 	}
 	82% {
 		opacity: 1;
-		-webkit-transform: scale(0.92);
+		transform: scale(0.92);
 	}
 	to {
 		opacity: 0;
-		-webkit-transform: scale(0.2);
+		transform: scale(0.2);
 	}
 }
 
 @-webkit-keyframes green {
 	from {
 		opacity: 0;
-		-webkit-transform: scale(2.6);
+		transform: scale(2.6);
 	}
 	20% {
 		opacity: 1;
-		-webkit-transform: scale(1);
+		transform: scale(1);
 	}
 	77% {
 		opacity: 1;
-		-webkit-transform: scale(0.9);
+		transform: scale(0.9);
 	}
 	to {
 		opacity: 0;
-		-webkit-transform: scale(0.1);
+		transform: scale(0.1);
 	}
 }
 
 /* safari keyframes */
 @-webkit-keyframes blue {
 	from {
-		-webkit-transform: scale(1.2);
+		transform: scale(1.2);
                 opacity: 0;
 	}
 	20% {
-		-webkit-transform: scale(0.8);
+		transform: scale(0.8);
                 opacity: 1;
 	}
 	84% {
-		-webkit-transform: scale(0.6);
+		transform: scale(0.6);
                 opacity: 1;
 	}
 	to {
-		-webkit-transform: scale(0.2);
+		transform: scale(0.2);
                 opacity: 0;
 	}
 }