Remove webkit prefixes for CSS Animation in chrome/ styles

chrome/browser/resources/ntp4/tile_page.js

Index: chrome/browser/resources/ntp4/tile_page.js
diff --git a/chrome/browser/resources/ntp4/tile_page.js b/chrome/browser/resources/ntp4/tile_page.js
index 1577cf5a7770d67e2ef8517bc215ea3581c10133..d6748cfa424754ae75ff8fe65eeb442aa2102d9d 100644
--- a/chrome/browser/resources/ntp4/tile_page.js
+++ b/chrome/browser/resources/ntp4/tile_page.js
@@ -60,7 +60,7 @@ cr.define('ntp', function() {
       this.addEventListener('dragend', this.onDragEnd_);
 
       this.firstChild.addEventListener(
-          'webkitAnimationEnd', this.onContentsAnimationEnd_.bind(this));
+          'animationend', this.onContentsAnimationEnd_.bind(this));
 
       this.eventTracker = new EventTracker();
     },
@@ -304,7 +304,7 @@ cr.define('ntp', function() {
     },
 
     /**
-     * Callback for the webkitAnimationEnd event on the tile's contents.
+     * Callback for the animationend event on the tile's contents.
      * @param {Event} e The event object.
      */
     onContentsAnimationEnd_: function(e) {