Files app: Concatenate background scripts.

ui/file_manager/file_manager/background/js/background_common_scripts.js

Index: ui/file_manager/file_manager/background/js/background_common_scripts.js
diff --git a/ui/file_manager/file_manager/background/js/background_common_scripts.js b/ui/file_manager/file_manager/background/js/background_common_scripts.js
new file mode 100644
index 0000000000000000000000000000000000000000..a5a67c9118d9c8eead81dcc8a103707555f3a245
--- /dev/null
+++ b/ui/file_manager/file_manager/background/js/background_common_scripts.js
@@ -0,0 +1,23 @@
+// 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.
+
+/**
+ * @fileoverview Scripts which are commonly used as parts of background scripts
+ * in Files app, Gallery app, Video Player app, and Audio Player app.
+ * The purpose of this file is to share common files between Files app and its
+ * companion apps to save the size.
+ * Note that adding a script in this file results in being loaded in each app.
+ */
+
+<include src="../../common/js/async_util.js">
+<include src="../../common/js/file_type.js">
+<include src="../../common/js/metrics_base.js">
+<include src="../../common/js/metrics_events.js">
+<include src="../../common/js/metrics.js">
+<include src="../../common/js/util.js">
+<include src="../../common/js/volume_manager_common.js">
+<include src="app_window_wrapper.js">
+<include src="background_base.js">
+<include src="test_util_base.js">
+<include src="volume_manager.js">