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

third_party/WebKit/Source/core/html/forms/BaseCheckableInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 52 matching lines @@
 }
 
 void BaseCheckableInputType::appendToFormData(FormData& formData) const
 {
     if (element().checked())
         formData.append(element().name(), element().value());
 }
 
 void BaseCheckableInputType::handleKeydownEvent(KeyboardEvent* event)
 {
-    const String& key = event->keyIdentifier();
-    if (key == "U+0020") {
+    const String& key = event->key();
+    if (key == " ") {
         element().setActive(true);
         // No setDefaultHandled(), because IE dispatches a keypress in this case
         // and the caller will only dispatch a keypress if we don't call setDefaultHandled().
     }
 }
 
 void BaseCheckableInputType::handleKeypressEvent(KeyboardEvent* event)
 {
     if (event->charCode() == ' ') {
         // Prevent scrolling down the page.
@@ skipping 45 matching lines @@
 {
     return true;
 }
 
 bool BaseCheckableInputType::shouldDispatchFormControlChangeEvent(String& oldValue, String& newValue)
 {
     return oldValue != newValue;
 }
 
 } // namespace blink