Use window.URL instead of window.webkitURL.

content/browser/resources/media/dump_creator.js

 // Copyright (c) 2013 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.
 
 
 /**
  * Provides the UI to start and stop RTP recording, forwards the start/stop
  * commands to Chrome, and updates the UI based on dump updates. Also provides
  * creating a file containing all PeerConnection updates and stats.
  */
@@ skipping 74 matching lines @@
 
     /**
      * Downloads the PeerConnection updates and stats data as a file.
      *
      * @private
      */
     onDownloadData_: function() {
       var textBlob =
           new Blob([JSON.stringify(peerConnectionDataStore, null, ' ')],
                                    {type: 'octet/stream'});
-      var URL = window.webkitURL.createObjectURL(textBlob);
+      var URL = window.URL.createObjectURL(textBlob);
       this.root_.getElementsByTagName('a')[0].href = URL;
       // The default action of the anchor will download the URL.
     },
 
     /**
      * Handles the event of toggling the rtp recording state.
      *
      * @private
      */
     onRtpToggled_: function() {
@@ skipping 46 matching lines @@
      */
     onUpdate: function(update) {
       if (this.recording_) {
         this.status_ = JSON.stringify(update);
         this.updateDisplay_();
       }
     },
   };
   return DumpCreator;
 })();