Use window.URL instead of window.webkitURL.

chrome/browser/resources/profiler/profiler.js

 // Copyright (c) 2012 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.
 
 var g_browserBridge;
 var g_mainView;
 
 // TODO(eroman): The handling of "max" across snapshots is not correct.
 // For starters the browser needs to be aware to generate new maximums.
 // Secondly, we need to take into account the "max" of intermediary snapshots,
@@ skipping 1783 matching lines @@
 
       var dump = {
         'userAgent': navigator.userAgent,
         'version': 1,
         'snapshots': snapshots
       };
 
       var dumpText = JSON.stringify(dump, null, ' ');
       var textBlob = new Blob([dumpText],
                               { type: 'octet/stream', endings: 'native' });
-      var blobUrl = window.webkitURL.createObjectURL(textBlob);
+      var blobUrl = window.URL.createObjectURL(textBlob);
       $(DOWNLOAD_ANCHOR_ID).href = blobUrl;
       $(DOWNLOAD_ANCHOR_ID).click();
     },
 
     loadFileChanged_: function() {
       this.loadSnapshots_($(SNAPSHOT_FILE_LOADER_ID).files[0]);
     },
 
     loadSnapshots_: function(file) {
       if (file) {
@@ skipping 399 matching lines @@
           groupKey.push(entry);
         }
 
         return JSON.stringify(groupKey);
       };
     },
   };
 
   return MainView;
 })();