Remove the use of KeyEvent.keyIdentifier.

ui/file_manager/video_player/js/video_player.js

 // Copyright 2014 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.
 
 /**
  * @param {!HTMLElement} playerContainer Main container.
  * @param {!HTMLElement} videoContainer Container for the video element.
  * @param {!HTMLElement} controlsContainer Container for video controls.
  * @constructor
  * @struct
@@ skipping 12 matching lines @@
 
   this.casting = false;
 
   var currentWindow = chrome.app.window.current();
   currentWindow.onFullscreened.addListener(
       this.onFullScreenChanged.bind(this, true));
   currentWindow.onRestored.addListener(
       this.onFullScreenChanged.bind(this, false));
   document.addEventListener('keydown', function(e) {
     this.inactivityWatcher_.kick();
-    switch (util.getKeyModifiers(e) + e.keyIdentifier) {
+    switch (util.getKeyModifiers(e) + e.key) {
       // Handle debug shortcut keys.
-      case 'Ctrl-Shift-U+0049': // Ctrl+Shift+I
+      case 'Ctrl-Shift-I': // Ctrl+Shift+I
         chrome.fileManagerPrivate.openInspector('normal');
         break;
-      case 'Ctrl-Shift-U+004A': // Ctrl+Shift+J
+      case 'Ctrl-Shift-J': // Ctrl+Shift+J
         chrome.fileManagerPrivate.openInspector('console');
         break;
-      case 'Ctrl-Shift-U+0043': // Ctrl+Shift+C
+      case 'Ctrl-Shift-C': // Ctrl+Shift+C
         chrome.fileManagerPrivate.openInspector('element');
         break;
-      case 'Ctrl-Shift-U+0042': // Ctrl+Shift+B
+      case 'Ctrl-Shift-B': // Ctrl+Shift+B
         chrome.fileManagerPrivate.openInspector('background');
         break;
 
-      case 'U+0020': // Space
-      case 'U+004B': // K
+      case ' ': // Space
+      case 'k':
       case 'MediaPlayPause':
         if (!e.target.classList.contains('menu-button'))
           this.togglePlayStateWithFeedback();
         break;
-      case 'U+001B': // Escape
+      case 'Escape':
         util.toggleFullScreen(
             chrome.app.window.current(),
             false);  // Leave the full screen mode.
         break;
-      case 'MediaNextTrack':
+      case 'MediaTrackNext':
         player.advance_(1);
         break;
-      case 'MediaPreviousTrack':
+      case 'MediaTrackPrevious':
         player.advance_(0);
         break;
-      case 'Right':
+      case 'ArrowRight':
         if (!e.target.classList.contains('volume'))
           this.smallSkip(true);
         break;
-      case 'Left':
+      case 'ArrowLeft':
         if (!e.target.classList.contains('volume'))
           this.smallSkip(false);
         break;
-      case 'U+004C': // L
+      case 'l':
         this.bigSkip(true);
         break;
-      case 'U+004A': // J
+      case 'j':
         this.bigSkip(false);
         break;
       case 'MediaStop':
         // TODO: Define "Stop" behavior.
         break;
     }
   }.wrap(this));
   document.addEventListener('keypress', function(e) {
     this.inactivityWatcher_.kick();
   }.wrap(this));
@@ skipping 726 matching lines @@
   return new Promise(function(fulfill, reject) {
     util.URLsToEntries(window.appState.items, function(entries) {
       metrics.recordOpenVideoPlayerAction();
       metrics.recordNumberOfOpenedFiles(entries.length);
 
       player.prepare(entries);
       player.playFirstVideo(player, fulfill);
     }.wrap());
   }.wrap());
 }.wrap());