Add script files of the separated Gallery.app.

ui/file_manager/file_manager/foreground/js/metadata/id3_parser.js

Index: ui/file_manager/file_manager/foreground/js/metadata/id3_parser.js
diff --git a/ui/file_manager/file_manager/foreground/js/metadata/id3_parser.js b/ui/file_manager/file_manager/foreground/js/metadata/id3_parser.js
index 4037d02e43e8b905bf22a05d1085ed4077a186a8..045e6a1614046c436eaef95df124d96f14bb5563 100644
--- a/ui/file_manager/file_manager/foreground/js/metadata/id3_parser.js
+++ b/ui/file_manager/file_manager/foreground/js/metadata/id3_parser.js
@@ -4,8 +4,17 @@
 
 'use strict';
 
-importScripts('function_sequence.js');
-importScripts('function_parallel.js');
+/**
+ * Protocol + host parts of extension URL.
+ * @type {string}
+ * @const
+ */
+var FILE_MANAGER_HOST = 'chrome-extension://hhaomjibdihmijegdhdafkllkbggdgoj';
+
+importScripts(
+    FILE_MANAGER_HOST + '/foreground/js/metadata/function_sequence.js');
+importScripts(
+    FILE_MANAGER_HOST + '/foreground/js/metadata/function_parallel.js');
 
 function Id3Parser(parent) {
   MetadataParser.call(this, parent, 'id3', /\.(mp3)$/i);