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

chrome/test/data/media/eme_player_js/media_source_utils.js

-// Copyright 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.
-
-// MediaSourceUtils provides basic functionality to load content using MSE API.
-var MediaSourceUtils = new function() {
-}
-
-MediaSourceUtils.loadMediaSourceFromTestConfig = function(testConfig,
-                                                          appendCallbackFn) {
-  return this.loadMediaSource(testConfig.mediaFile,
-                              testConfig.mediaType,
-                              appendCallbackFn);
-};
-
-MediaSourceUtils.loadMediaSource = function(mediaFiles,
-                                            mediaTypes,
-                                            appendCallbackFn) {
-  if (!mediaFiles || !mediaTypes)
-    Utils.failTest('Missing parameters in loadMediaSource().');
-
-  var mediaFiles = Utils.convertToArray(mediaFiles);
-  var mediaTypes = Utils.convertToArray(mediaTypes);
-  var totalAppended = 0;
-  function onSourceOpen(e) {
-    Utils.timeLog('onSourceOpen', e);
-    // We can load multiple media files using the same media type. However, if
-    // more than one media type is used, we expect to have a media type entry
-    // for each corresponding media file.
-    var srcBuffer = null;
-    for (var i = 0; i < mediaFiles.length; i++) {
-      if (i == 0 || mediaFiles.length == mediaTypes.length) {
-        Utils.timeLog('Creating a source buffer for type ' + mediaTypes[i]);
-        try {
-          srcBuffer = mediaSource.addSourceBuffer(mediaTypes[i]);
-        } catch (e) {
-          Utils.failTest('Exception adding source buffer: ' + e.message);
-          return;
-        }
-      }
-      doAppend(mediaFiles[i], srcBuffer);
-    }
-  }
-
-  function doAppend(mediaFile, srcBuffer) {
-    var xhr = new XMLHttpRequest();
-    xhr.open('GET', mediaFile);
-    xhr.responseType = 'arraybuffer';
-    xhr.addEventListener('load', function(e) {
-      var onUpdateEnd = function(e) {
-        Utils.timeLog('End of appending buffer from ' + mediaFile);
-        srcBuffer.removeEventListener('updateend', onUpdateEnd);
-        totalAppended++;
-        if (totalAppended == mediaFiles.length) {
-          if (appendCallbackFn)
-            appendCallbackFn(mediaSource);
-          else
-            mediaSource.endOfStream();
-        }
-      };
-      srcBuffer.addEventListener('updateend', onUpdateEnd);
-      srcBuffer.appendBuffer(new Uint8Array(e.target.response));
-    });
-    xhr.send();
-  }
-
-  var mediaSource = new MediaSource();
-  mediaSource.addEventListener('sourceopen', onSourceOpen);
-  return mediaSource;
-};