Support to repeat one song in Audio Player.

ui/file_manager/audio_player/elements/repeat_button.html

Index: ui/file_manager/audio_player/elements/repeat_button.html
diff --git a/ui/file_manager/audio_player/elements/repeat_button.html b/ui/file_manager/audio_player/elements/repeat_button.html
new file mode 100644
index 0000000000000000000000000000000000000000..c38390cafdf18e56b2bf049a21b1577c1e1c4a4a
--- /dev/null
+++ b/ui/file_manager/audio_player/elements/repeat_button.html
@@ -0,0 +1,16 @@
+<!-- Copyright 2016 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.
+  -->
+
+<link rel="import" href="chrome://resources/polymer/v1_0/polymer/polymer.html">
+<link rel="import" href="chrome-extension://hhaomjibdihmijegdhdafkllkbggdgoj/foreground/elements/files_toggle_ripple.html">
+
+<dom-module id="repeat-button">
+  <link rel="import" type="css" href="repeat_button.css">
+  <template>
+    <files-toggle-ripple activated="[[isActive(repeatMode)]]" class$="{{repeatMode}}"></files-toggle-ripple>
+  </template>
+
+  <script src="repeat_button.js"></script>
+</dom-module>