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

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

 /*
  * Copyright (C) 2010 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 418 matching lines @@
 void MultipleFieldsTemporalInputTypeView::requiredAttributeChanged()
 {
     updateClearButtonVisibility();
 }
 
 void MultipleFieldsTemporalInputTypeView::handleKeydownEvent(KeyboardEvent* event)
 {
     if (!element().focused())
         return;
     if (m_pickerIndicatorIsVisible
-        && ((event->keyIdentifier() == "Down" && event->getModifierState("Alt")) || (LayoutTheme::theme().shouldOpenPickerWithF4Key() && event->keyIdentifier() == "F4"))) {
+        && ((event->key() == "ArrowDown" && event->getModifierState("Alt")) || (LayoutTheme::theme().shouldOpenPickerWithF4Key() && event->key() == "F4"))) {
         if (PickerIndicatorElement* element = pickerIndicatorElement())
             element->openPopup();
         event->setDefaultHandled();
     } else {
         forwardEvent(event);
     }
 }
 
 bool MultipleFieldsTemporalInputTypeView::hasBadInput() const
 {
@@ skipping 175 matching lines @@
 }
 
 AXObject* MultipleFieldsTemporalInputTypeView::popupRootAXObject()
 {
     if (PickerIndicatorElement* picker = pickerIndicatorElement())
         return picker->popupRootAXObject();
     return nullptr;
 }
 
 } // namespace blink