ES6: migrated "media"

app/script/audio/AudioError.js

@@ -22,7 +22,7 @@
 window.z = window.z || {};
 window.z.audio = z.audio || {};
 
-window.z.audio.AudioError = class AudioError extends Error {
+z.audio.AudioError = class AudioError extends Error {
   constructor(type) {
     super();
     this.name = this.constructor.name;

app/script/media/MediaDeviceType.js

@@ -0,0 +1,30 @@
+/*
+ * Wire
+ * Copyright (C) 2017 Wire Swiss GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see http://www.gnu.org/licenses/.
+ *
+ */
+
+'use strict';
+
+window.z = window.z || {};
+window.z.media = z.media || {};
+
+z.media.MediaDeviceType = {
+  AUDIO_INPUT: 'audioinput',
+  AUDIO_OUTPUT: 'audiooutput',
+  SCREEN_INPUT: 'screeninput',
+  VIDEO_INPUT: 'videoinput',
+};