Remove webkit prefixes for transform and perspective in chrome/ styles

chrome/browser/resources/chromeos/login/oobe_screen.css

Index: chrome/browser/resources/chromeos/login/oobe_screen.css
diff --git a/chrome/browser/resources/chromeos/login/oobe_screen.css b/chrome/browser/resources/chromeos/login/oobe_screen.css
index f0cffefa34efb8cadee14b91bf9540bfee57a608..5569a69acaabaab689e930fca9a840f890a1c043 100644
--- a/chrome/browser/resources/chromeos/login/oobe_screen.css
+++ b/chrome/browser/resources/chromeos/login/oobe_screen.css
@@ -15,7 +15,7 @@
 }
 
 .step.animated:not(.faded) {
-  -webkit-transition: -webkit-transform 200ms ease-in-out,
+  -webkit-transition: transform 200ms ease-in-out,
                       opacity 200ms ease-in-out,
                       visibility 200ms ease-in-out;
 }
@@ -31,11 +31,11 @@
 }
 
 .step.right {
-  -webkit-transform: translateX(50px);
+  transform: translateX(50px);
 }
 
 .step.left {
-  -webkit-transform: translateX(-50px)
+  transform: translateX(-50px)
 }
 
 .step.fullscreen {