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

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

 /*
  * Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 93 matching lines @@
 {
     if (isMainSummary() && layoutObject()) {
         if (event->type() == EventTypeNames::DOMActivate && !isClickableControl(event->target()->toNode())) {
             if (HTMLDetailsElement* details = detailsElement())
                 details->toggleOpen();
             event->setDefaultHandled();
             return;
         }
 
         if (event->isKeyboardEvent()) {
-            if (event->type() == EventTypeNames::keydown && toKeyboardEvent(event)->keyIdentifier() == "U+0020") {
+            if (event->type() == EventTypeNames::keydown && toKeyboardEvent(event)->key() == " ") {
                 setActive(true);
                 // No setDefaultHandled() - IE dispatches a keypress in this case.
                 return;
             }
             if (event->type() == EventTypeNames::keypress) {
                 switch (toKeyboardEvent(event)->charCode()) {
                 case '\r':
                     dispatchSimulatedClick(event);
                     event->setDefaultHandled();
                     return;
                 case ' ':
                     // Prevent scrolling down the page.
                     event->setDefaultHandled();
                     return;
                 }
             }
-            if (event->type() == EventTypeNames::keyup && toKeyboardEvent(event)->keyIdentifier() == "U+0020") {
+            if (event->type() == EventTypeNames::keyup && toKeyboardEvent(event)->key() == " ") {
                 if (active())
                     dispatchSimulatedClick(event);
                 event->setDefaultHandled();
                 return;
             }
         }
     }
 
     HTMLElement::defaultEventHandler(event);
 }
 
 bool HTMLSummaryElement::willRespondToMouseClickEvents()
 {
     if (isMainSummary() && layoutObject())
         return true;
 
     return HTMLElement::willRespondToMouseClickEvents();
 }
 
 } // namespace blink