Implement refreshing logic in Files app.

ui/file_manager/file_manager/foreground/js/file_manager.js

 // Copyright (c) 2012 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.
 
 /**
  * FileManager constructor.
  *
  * FileManager objects encapsulate the functionality of the file selector
  * dialogs, as well as the full screen file manager application (though the
  * latter is not yet implemented).
@@ skipping 323 matching lines @@
   get namingController() {
     return this.namingController_;
   },
   /**
    * @return {TaskController}
    */
   get taskController() {
     return this.taskController_;
   },
   /**
+   * @return {SpinnerController}
+   */
+  get spinnerController() {
+    return this.spinnerController_;
+  },
+  /**
    * @return {FileOperationManager}
    */
   get fileOperationManager() {
     return this.fileOperationManager_;
   },
   /**
    * @return {BackgroundWindow}
    */
   get backgroundPage() {
     return this.backgroundPage_;
@@ skipping 615 matching lines @@
     this.namingController_ = new NamingController(
         this.ui_.listContainer,
         this.ui_.alertDialog,
         this.ui_.confirmDialog,
         this.directoryModel_,
         this.fileFilter_,
         this.selectionHandler_);
 
     // Create spinner controller.
     this.spinnerController_ = new SpinnerController(
-        this.ui_.listContainer.spinner, this.directoryModel_);
+        this.ui_.listContainer.spinner);
     this.spinnerController_.show();
 
     // Create dialog action controller.
     assert(this.launchParams_);
     this.dialogActionController_ = new DialogActionController(
         this.dialogType,
         this.ui_.dialogFooter,
         this.directoryModel_,
         this.metadataModel_,
         this.volumeManager_,
@@ skipping 382 matching lines @@
       out += this.initializeQueue_.pendingTasks[key].toString() + '\n';
     }.bind(this));
 
     out += '2. VolumeManagerWrapper\n' +
         this.volumeManager_.toString() + '\n';
 
     out += 'End of debug information.';
     console.log(out);
   };
 })();