Reduce webkit CSS prefixes in ui/ styles

ui/webui/resources/js/cr/ui/card_slider.js

Index: ui/webui/resources/js/cr/ui/card_slider.js
diff --git a/ui/webui/resources/js/cr/ui/card_slider.js b/ui/webui/resources/js/cr/ui/card_slider.js
index f19199125a176aec21ba2b7015f24e4fd55279e9..3b7c20fbbb620dea908c662d6a34cc450ff53eff 100644
--- a/ui/webui/resources/js/cr/ui/card_slider.js
+++ b/ui/webui/resources/js/cr/ui/card_slider.js
@@ -137,7 +137,7 @@ cr.define('cr.ui', function() {
                                      this.onMouseWheel_.bind(this));
       }
       this.container_.addEventListener(
-          'webkitTransitionEnd', this.onWebkitTransitionEnd_.bind(this));
+          'transitionend', this.onTransitionEnd_.bind(this));
 
       // Also support touch events in case a touch screen happens to be
       // available.  Note that this has minimal impact in the common case of
@@ -328,12 +328,12 @@ cr.define('cr.ui', function() {
     },
 
     /**
-     * Handles the ends of -webkit-transitions on transform (animated
+     * Handles the ends of transitions on transform (animated
      * card switches).
-     * @param {Event} e The webkitTransitionEnd event.
+     * @param {Event} e The transitionend event.
      * @private
      */
-    onWebkitTransitionEnd_: function(e) {
+    onTransitionEnd_: function(e) {
       // Ignore irrelevant transitions that might bubble up.
       if (e.target !== this.container_ || e.propertyName != 'transform')
         return;