Handle the "key" field as opposed to keyIdentifier field.

third_party/WebKit/Source/core/html/MediaDocument.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 238 matching lines @@
     Node* targetNode = event->target()->toNode();
     if (!targetNode)
         return;
 
     if (event->type() == EventTypeNames::keydown && event->isKeyboardEvent()) {
         HTMLVideoElement* video = Traversal<HTMLVideoElement>::firstWithin(*targetNode);
         if (!video)
             return;
 
         KeyboardEvent* keyboardEvent = toKeyboardEvent(event);
-        if (keyboardEvent->keyIdentifier() == "U+0020" || keyboardEvent->keyCode() == VKEY_MEDIA_PLAY_PAUSE) {
+        if (keyboardEvent->key() == " " || keyboardEvent->keyCode() == VKEY_MEDIA_PLAY_PAUSE) {
             // space or media key (play/pause)
             video->togglePlayState();
             event->setDefaultHandled();
         }
     }
 }
 
 } // namespace blink