Use window.URL instead of window.webkitURL.

chrome/test/data/extensions/api_test/tab_capture/end_to_end.js

 // Copyright 2014 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.
 
 // The tests here cover the end-to-end functionality of tab capturing and
 // playback as video.  The page generates a test signal (a full color fill), and
 // the rendering output of the tab is captured into a LocalMediaStream.  Then,
 // the LocalMediaStream is plugged into a video element for playback, and a
 // canvas is used to examine the frames of the video for expected content.
 //
@@ skipping 67 matching lines @@
         ++curColorIdx;
         updateTestDocument();
       } else {
         video.removeEventListener("timeupdate", checkVideoForFillColor);
         stream.stop();
         chrome.test.succeed();
       }
     }
   }
   // Play the LocalMediaStream in the video element.
-  video.src = webkitURL.createObjectURL(stream);
+  video.src = URL.createObjectURL(stream);
   video.play();
 
   // Kick it off.
   updateTestDocument();
   video.addEventListener("timeupdate", checkVideoForFillColor);
 }
 
 // Set up a WebRTC connection and pipe |stream| through it.
 // Call TestStream with the new stream when done.
 function testThroughWebRTC(stream) {
@@ skipping 52 matching lines @@
 }
 
 chrome.test.runTests([
   endToEndVideoTest,
   endToEndVideoTestWithWebRTC
 ]);
 
 // TODO(miu): Once the WebAudio API is finalized, we should add a test to emit a
 // tone from the sender page, and have the receiver page check for the audio
 // tone.