(NOT FOR FINAL REVIEW)Refactor butter_bar.js for wallpaper manager and file manager to use.

chrome/browser/resources/file_manager/main.html

Index: chrome/browser/resources/file_manager/main.html
diff --git a/chrome/browser/resources/file_manager/main.html b/chrome/browser/resources/file_manager/main.html
index 0e1f3757caba0958c5fa32c1d794ce3577ba78ed..426f158b148d580a4cf8a730f3c8495b455a8c64 100644
--- a/chrome/browser/resources/file_manager/main.html
+++ b/chrome/browser/resources/file_manager/main.html
@@ -66,12 +66,14 @@
       <script src="../shared/js/cr/ui/menu_button.js"></script>
       <script src="../shared/js/cr/ui/context_menu_handler.js"></script>
 
+      <script src="../shared/js/chromeos/butter_bar.js"></script>
+
       <script src="js/combobutton.js"></script>
 
       <script src="js/path_util.js"></script>
       <script src="js/util.js"></script>
       <script src="js/breadcrumbs_controller.js"></script>
-      <script src="js/butter_bar.js"></script>
+      <script src="js/file_manager_butter_bar.js"></script>
       <script src="js/directory_contents.js"></script>
       <script src="js/directory_model.js"></script>
       <script src="js/file_copy_manager_wrapper.js"></script>