Files app: Compile custom elements.

ui/file_manager/audio_player/elements/control_panel.js

Index: ui/file_manager/audio_player/elements/control_panel.js
diff --git a/ui/file_manager/audio_player/elements/control_panel.js b/ui/file_manager/audio_player/elements/control_panel.js
index ad142fd1736e95a245a778fb29f11f2612f577ce..2de3266c2905b3de994b002d5333e1648ef1c860 100644
--- a/ui/file_manager/audio_player/elements/control_panel.js
+++ b/ui/file_manager/audio_player/elements/control_panel.js
@@ -2,6 +2,24 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+/**
+ * @typedef {?{

[oka, 2016/12/26 11:38:38]

nit: Can you remove ? here and add ? to @type {AriaLabels} ?

[fukino, 2016/12/26 11:44:43]

This is a common pattern for typedefs of record types.
The header comment of chrome_extensions.js have more details.
https://codesearch.chromium.org/chromium/src/third_party/closure_compiler/ext...

+ *   mute: string,
+ *   next: string,
+ *   pause: string,
+ *   play: string,
+ *   playList: string,
+ *   previous: string,
+ *   repeat: string,
+ *   seekSlider: string,
+ *   shuffle: string,
+ *   unmute: string,
+ *   volume: string,
+ *   volumeSlider: string,
+ * }}
+ */
+var AriaLabels;
+
 (function() {
   'use strict';
 
@@ -117,6 +135,7 @@
 
       /**
        * Dictionary which contains aria-labels for each controls.
+       * @type {AriaLabels}
        */
       ariaLabels: {
         type: Object,