Remove keyIdentifier usage in chrome/browser/resources/*

chrome/browser/resources/options/cookies_list.js

Index: chrome/browser/resources/options/cookies_list.js
diff --git a/chrome/browser/resources/options/cookies_list.js b/chrome/browser/resources/options/cookies_list.js
index b68fc8d84f636d856d7505108e957d1a90c0554f..c3b97c214b82d71dc1b16b5f4814b0f153d72331 100644
--- a/chrome/browser/resources/options/cookies_list.js
+++ b/chrome/browser/resources/options/cookies_list.js
@@ -745,13 +745,13 @@ cr.define('options', function() {
      * @private
      */
     handleKeyLeftRight_: function(e) {
-      var id = e.keyIdentifier;
+      var id = e.key;
       if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey)
         return;
-      if ((id == 'Left' || id == 'Right') && this.expandedItem) {
+      if ((id == 'ArrowLeft' || id == 'ArrowRight') && this.expandedItem) {
         var cs = this.ownerDocument.defaultView.getComputedStyle(this);
         var rtl = cs.direction == 'rtl';
-        if ((!rtl && id == 'Left') || (rtl && id == 'Right'))
+        if ((!rtl && id == 'ArrowLeft') || (rtl && id == 'ArrowRight'))
           this.expandedItem.selectedIndex--;
         else
           this.expandedItem.selectedIndex++;