Remove webkit prefixes for CSS Animation in ui/ styles

ui/file_manager/file_manager/foreground/js/ui/file_table.js

Index: ui/file_manager/file_manager/foreground/js/ui/file_table.js
diff --git a/ui/file_manager/file_manager/foreground/js/ui/file_table.js b/ui/file_manager/file_manager/foreground/js/ui/file_table.js
index e5ef7831f4ab15f28d35085d8f6bee2c5e819445..1dae4d49e1cc6722cade45ddca2a6e2e5fb0c751 100644
--- a/ui/file_manager/file_manager/foreground/js/ui/file_table.js
+++ b/ui/file_manager/file_manager/foreground/js/ui/file_table.js
@@ -961,7 +961,7 @@ FileTable.prototype.setThumbnailImage_ = function(box, dataUrl, shouldAnimate) {
   var thumbnail = box.ownerDocument.createElement('div');
   thumbnail.classList.add('thumbnail');
   thumbnail.style.backgroundImage = 'url(' + dataUrl + ')';
-  thumbnail.addEventListener('webkitAnimationEnd', function() {
+  thumbnail.addEventListener('animationend', function() {
     // Remove animation css once animation is completed in order not to animate
     // again when an item is attached to the dom again.
     thumbnail.classList.remove('animate');