Remove unavailable shortcut silently instead of showing a confirmation dialog

chrome/browser/resources/file_manager/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.
 
 'use strict';
 
 /**
  * This variable is checked in SelectFileDialogExtensionBrowserTest.
  * @type {number}
  */
@@ skipping 1132 matching lines @@
 
     this.navigationList_ = this.dialogDom_.querySelector('#navigation-list');
     NavigationList.decorate(this.navigationList_,
                             this.volumeManager_,
                             this.directoryModel_);
     this.navigationList_.fileManager = this;
     this.navigationList_.dataModel =
         new NavigationListModel(this.filesystem_,
                                 this.directoryModel_.getRootsList(),
                                 this.folderShortcutsModel_);
-
-    this.navigationList_.addEventListener(
-        'shortcut-target-not-found',
-        function(e) {
-          var path = e.path;
-          var label = e.label;
-          this.confirm.showWithTitle(
-            label,
-            str('SHORTCUT_TARGET_UNAVAILABLE'),
-            // 'Yes' is clicked.
-            function() {
-              this.removeFolderShortcut(path);
-            }.bind(this));
-        }.bind(this));
   };
 
   /**
    * @private
    */
   FileManager.prototype.updateMiddleBarVisibility_ = function() {
     var currentPath = this.directoryModel_.getCurrentDirPath();
     var driveStatus = this.volumeManager_.getDriveStatus();
     var visible =
         DirectoryTreeUtil.isEligiblePathForDirectoryTree(currentPath) &&
@@ skipping 2747 matching lines @@
    */
   FileManager.prototype.setCtrlKeyPressed_ = function(flag) {
     this.ctrlKeyPressed_ = flag;
     // Before the DOM is constructed, the key event can be handled.
     var cacheClearCommand =
         this.document_.querySelector('#drive-clear-local-cache');
     if (cacheClearCommand)
       cacheClearCommand.canExecuteChange();
   };
 })();