Reduce usage of webkit CSS prefixes in chrome/browser/resources

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..0327ddd7d9fb52262f25461abdaf3d7991c2dc09 100644
--- a/chrome/browser/resources/chromeos/login/oobe_screen.css
+++ b/chrome/browser/resources/chromeos/login/oobe_screen.css
@@ -15,9 +15,9 @@
 }
 
 .step.animated:not(.faded) {
-  -webkit-transition: -webkit-transform 200ms ease-in-out,
-                      opacity 200ms ease-in-out,
-                      visibility 200ms ease-in-out;
+  transition: transform 200ms ease-in-out,
+              opacity 200ms ease-in-out,
+              visibility 200ms ease-in-out;
 }
 
 .step.hidden {
@@ -31,11 +31,11 @@
 }
 
 .step.right {
-  -webkit-transform: translateX(50px);
+  transform: translateX(50px);
 }
 
 .step.left {
-  -webkit-transform: translateX(-50px)
+  transform: translateX(-50px)
 }
 
 .step.fullscreen {
@@ -122,9 +122,9 @@ html[dir=rtl] .step-controls {
 #security-info a:focus,
 #eula a:focus,
 .step-extra-controls a:focus {
-  -webkit-transition: outline-color 200ms;
   /* Note: May use 1px solid here. */
   outline-color: rgb(77, 144, 254);
+  transition: outline-color 200ms;
 }
 
 .step-extra-controls > *:not(:first-child) {