Remove unused NavigationList-related code.

ui/file_manager/file_manager/foreground/js/file_transfer_controller.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';
 
 /**
  * Global (placed in the window object) variable name to hold internal
  * file dragging information. Needed to show visual feedback while dragging
  * since DataTransfer object is in protected state. Reachable from other
@@ skipping 116 matching lines @@
    * @param {DirectoryTree} tree Its sub items will could be drop target.
    */
   attachTreeDropTarget: function(tree) {
     tree.addEventListener('dragover', this.onDragOver_.bind(this, true, tree));
     tree.addEventListener('dragenter', this.onDragEnterTree_.bind(this, tree));
     tree.addEventListener('dragleave', this.onDragLeave_.bind(this, tree));
     tree.addEventListener('drop', this.onDrop_.bind(this, true));
   },
 
   /**
-   * @this {FileTransferController}
-   * @param {NavigationList} tree Its sub items will could be drop target.
-   */
-  attachNavigationListDropTarget: function(list) {
-    list.addEventListener('dragover',
-        this.onDragOver_.bind(this, true /* onlyIntoDirectories */, list));
-    list.addEventListener('dragenter',
-        this.onDragEnterVolumesList_.bind(this, list));
-    list.addEventListener('dragleave', this.onDragLeave_.bind(this, list));
-    list.addEventListener('drop',
-        this.onDrop_.bind(this, true /* onlyIntoDirectories */));
-  },
-
-  /**
    * Attach handlers of copy, cut and paste operations to the document.
    *
    * @this {FileTransferController}
    */
   attachCopyPasteHandlers: function() {
     this.document_.addEventListener('beforecopy',
                                     this.onBeforeCopy_.bind(this));
     this.document_.addEventListener('copy',
                                     this.onCopy_.bind(this));
     this.document_.addEventListener('beforecut',
@@ skipping 463 matching lines @@
     var entry = item && item.entry;
     if (entry) {
       this.setDropTarget_(item, event.dataTransfer, entry);
     } else {
       this.clearDropTarget_();
     }
   },
 
   /**
    * @this {FileTransferController}
-   * @param {NavigationList} list Drop target list.
-   * @param {Event} event A dragenter event of DOM.
-   */
-  onDragEnterVolumesList_: function(list, event) {
-    event.preventDefault();  // Required to prevent the cursor flicker.
-
-    this.lastEnteredTarget_ = event.target;
-    var item = list.getListItemAncestor(event.target);
-    item = item && list.isItem(item) ? item : null;
-    if (item === this.dropTarget_)
-      return;
-
-    var modelItem = item && list.dataModel.item(item.listIndex);
-    if (modelItem && modelItem.isShortcut) {
-      this.setDropTarget_(item, event.dataTransfer, modelItem.entry);
-      return;
-    }
-    if (modelItem && modelItem.isVolume && modelItem.volumeInfo.displayRoot) {
-      this.setDropTarget_(
-          item, event.dataTransfer, modelItem.volumeInfo.displayRoot);
-      return;
-    }
-
-    this.clearDropTarget_();
-  },
-
-  /**
-   * @this {FileTransferController}
    * @param {cr.ui.List} list Drop target list.
    * @param {Event} event A dragleave event of DOM.
    */
   onDragLeave_: function(list, event) {
     // If mouse moves from one element to another the 'dragenter'
     // event for the new element comes before the 'dragleave' event for
     // the old one. In this case event.target !== this.lastEnteredTarget_
     // and handler of the 'dragenter' event has already caried of
     // drop target. So event.target === this.lastEnteredTarget_
     // could only be if mouse goes out of listened element.
@@ skipping 430 matching lines @@
           !event.ctrlKey) {
         return 'move';
       }
       if (event.shiftKey) {
         return 'move';
       }
     }
     return 'copy';
   },
 };