Support to repeat one song in Audio Player.

ui/file_manager/audio_player/elements/control_panel.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.
 
 (function() {
   'use strict';
 
   /**
    * Moves |target| element above |anchor| element, in order to match the
    * bottom lines.
@@ skipping 59 matching lines @@
       /**
        * Whether the shuffle button is ON.
        */
       shuffle: {
         type: Boolean,
         value: false,
         notify: true
       },
 
       /**
-       * Whether the repeat button is ON.
+       * What mode the repeat button idicates.
+       * repeat-modes can be "no-repeat", "repeat-all", "repeat-one".
        */
-      repeat: {
-        type: Boolean,
-        value: false,
+      repeatMode: {
+        type: String,
+        value: "no-repeat",
         notify: true
       },
 
       /**
        * The audio volume. 0 is silent, and 100 is maximum loud.
        */
       volume: {
         type: Number,
         value: 50,
         notify: true,
@@ skipping 205 matching lines @@
       this.$.next.setAttribute('aria-label', ariaLabels.next);
       this.$.volumeButton.setAttribute('aria-label', ariaLabels.volume);
       this.$.playList.setAttribute('aria-label', ariaLabels.playList);
       this.$.timeSlider.setAttribute('aria-label', ariaLabels.seekSlider);
       this.$.volumeButton.setAttribute('aria-label',
           this.volume !== 0 ? ariaLabels.mute : ariaLabels.unmute);
       this.$.volumeSlider.setAttribute('aria-label', ariaLabels.volumeSlider);
     },
   });
 })();  // Anonymous closure