Convert Event#keyIdentifier (deprecated) to Event#key

chrome/common/extensions/docs/examples/extensions/plugin_settings/options/js/inline_editable_list.js

 // Copyright (c) 2011 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.
 
 cr.define('options', function() {
   const DeletableItem = options.DeletableItem;
   const DeletableItemList = options.DeletableItemList;
 
   /**
    * Creates a new list item with support for inline editing.
@@ skipping 287 matching lines @@
     /**
      * Called a key is pressed. Handles committing and cancelling edits.
      * @param {Event} e The key down event.
      * @private
      */
     handleKeyDown_: function(e) {
       if (!this.editing)
         return;
 
       var endEdit = false;
-      switch (e.keyIdentifier) {
-        case 'U+001B':  // Esc
+      switch (e.key) {
+        case 'Escape':
           this.editCancelled_ = true;
           endEdit = true;
           break;
         case 'Enter':
           if (this.currentInputIsValid)
             endEdit = true;
           break;
       }
 
       if (endEdit) {
@@ skipping 85 matching lines @@
       return true;
     },
   };
 
   // Export
   return {
     InlineEditableItem: InlineEditableItem,
     InlineEditableItemList: InlineEditableItemList,
   };
 });