Reduce webkit CSS prefixes in ui/ styles

chrome/browser/resources/bluetooth_internals/snackbar.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * Javascript for Snackbar controls, served from chrome://bluetooth-internals/.
  */
 
 cr.define('snackbar', function() {
   /** @typedef {{
@@ skipping 85 matching lines @@
      * snackbar is already hidden, a resolved Promise is returned.
      * @return {!Promise}
      */
     dismiss: function() {
       this.stopTimeout_();
 
       if (!this.classList.contains('open'))
         return Promise.resolve();
 
       return new Promise(function(resolve) {
-        listenOnce(this, 'webkitTransitionEnd', function() {
+        listenOnce(this, 'transitionend', function() {
           this.dispatchEvent(new CustomEvent('dismissed'));
           resolve();
         }.bind(this));
 
         ensureTransitionEndEvent(this, TRANSITION_DURATION);
         this.classList.remove('open');
 
         document.removeEventListener('contentfocus', this.boundStartTimeout_);
         document.removeEventListener('contentblur', this.boundStopTimeout_);
       }.bind(this));
@@ skipping 112 matching lines @@
     return Promise.resolve();
   };
 
 
 
   return {
     Snackbar: Snackbar,
     SnackbarType: SnackbarType,
   };
 });