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

chrome/test/data/media/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;
-}
-
-WidevinePlayer.prototype.init = function() {
-  PlayerUtils.initEMEPlayer(this);
-};
-
-WidevinePlayer.prototype.registerEventListeners = function() {
-  PlayerUtils.registerEMEEventListeners(this);
-};
-
-WidevinePlayer.prototype.onMessage = function(message) {
-  Utils.timeLog('MediaKeySession onMessage', message);
-  var mediaKeySession = message.target;
-  function onSuccess(response) {
-    var key = new Uint8Array(response);
-    Utils.timeLog('Update media key session with license response.', key);
-    if (PROMISES_SUPPORTED) {
-      mediaKeySession.update(key).catch(function(error) {
-        Utils.failTest(error, KEY_ERROR);
-      });
-    } else {
-      mediaKeySession.update(key);
-    }
-
-  }
-  Utils.sendRequest('POST', 'arraybuffer', message.message,
-                    this.testConfig.licenseServerURL, onSuccess,
-                    this.testConfig.forceInvalidResponse);
-};