Remove TOUCH_START event handler from volume_list.js

chrome/browser/resources/file_manager/js/volume_list.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';
 
 /**
  * A volume list model. This model combines the 2 lists.
  * @param {cr.ui.ArrayDataModel} volumesList The first list of the model.
  * @param {cr.ui.ArrayDataModel} pinnedList The second list of the model.
@@ skipping 293 matching lines @@
   item.addEventListener('click', handleClick);
 
   var handleEject = function() {
     var unmountCommand = cr.doc.querySelector('command#unmount');
     // Let's make sure 'canExecute' state of the command is properly set for
     // the root before executing it.
     unmountCommand.canExecuteChange(item);
     unmountCommand.execute(item);
   };
   item.addEventListener('eject', handleEject);
-  // TODO(yoshiki): Check if the following touch handler is necessary or not.
-  // If unnecessary, remove it.
-  item.addEventListener(cr.ui.TouchHandler.EventType.TOUCH_START, handleClick);
 
   if (this.contextMenu_)
     item.maybeSetContextMenu(this.contextMenu_);
 
   // If the current directory is already set.
   if (this.currentVolume_ == path) {
     setTimeout(function() {
       this.selectedItem = path;
     }.bind(this), 0);
   }
@@ skipping 96 matching lines @@
     var itemPath = this.dataModel.item(i);
     if (PathUtil.getRootPath(itemPath) == newRootPath) {
       // Not to invoke the handler of this instance, sets the guard.
       this.dontHandleSelectionEvent_ = true;
       this.selectionModel.selectedIndex = i;
       this.dontHandleSelectionEvent_ = false;
       return;
     }
   }
 };