Convert Event#keyIdentifier (deprecated) to Event#key

ui/webui/resources/js/cr/ui/overlay.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.
 
 /**
  * @fileoverview Provides dialog-like behaviors for the tracing UI.
  */
 cr.define('cr.ui.overlay', function() {
   /**
    * Gets the top, visible overlay. It makes the assumption that if multiple
@@ skipping 32 matching lines @@
    * Makes initializations which must hook at the document level.
    */
   function globalInitialization() {
     if (!globallyInitialized) {
       document.addEventListener('keydown', function(e) {
         var overlay = getTopOverlay();
         if (!overlay)
           return;
 
         // Close the overlay on escape.
-        if (e.keyIdentifier == 'U+001B')
+        if (e.key == 'Escape')
           cr.dispatchSimpleEvent(overlay, 'cancelOverlay');
 
         // Execute the overlay's default button on enter, unless focus is on an
         // element that has standard behavior for the enter key.
         var forbiddenTagNames = /^(A|BUTTON|SELECT|TEXTAREA)$/;
-        if (e.keyIdentifier == 'Enter' &&
+        if (e.key == 'Enter' &&
             !forbiddenTagNames.test(document.activeElement.tagName)) {
           var button = getDefaultButton(overlay);
           if (button) {
             button.click();
             // Executing the default button may result in focus moving to a
             // different button. Calling preventDefault is necessary to not have
             // that button execute as well.
             e.preventDefault();
           }
         }
@@ skipping 61 matching lines @@
       e.target.classList.remove('pulse');
     });
   }
 
   return {
     getDefaultButton: getDefaultButton,
     globalInitialization: globalInitialization,
     setupOverlay: setupOverlay,
   };
 });