Have media content and chrome browser tests load data from media/test/data

media/test/data/eme_player_js/widevine_player.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.
 
 // Widevine player responsible for playing media using Widevine key system
 // and EME working draft API.
 function WidevinePlayer(video, testConfig) {
   this.video = video;
   this.testConfig = testConfig;
 }
@@ skipping 18 matching lines @@
       });
     } else {
       mediaKeySession.update(key);
     }
 
   }
   Utils.sendRequest('POST', 'arraybuffer', message.message,
                     this.testConfig.licenseServerURL, onSuccess,
                     this.testConfig.forceInvalidResponse);
 };