Support aria-checked attribute for aria role menuitemcheckbox and menuitemradio

Source/core/accessibility/AXNodeObject.cpp

 /*
 * Copyright (C) 2012, 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:
 *
 * 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
@@ skipping 642 matching lines @@
 bool AXNodeObject::isChecked() const
 {
     Node* node = this->node();
     if (!node)
         return false;
 
     // First test for native checkedness semantics
     if (isHTMLInputElement(*node))
         return toHTMLInputElement(*node).shouldAppearChecked();
 
-    // Else, if this is an ARIA checkbox or radio, respect the aria-checked attribute
+    // Else, if this is an ARIA checkbox or radio OR ARIA role menuitemcheckbox
+    // or menuitemradio, respect the aria-checked attribute
     AccessibilityRole ariaRole = ariaRoleAttribute();
-    if (ariaRole == RadioButtonRole || ariaRole == CheckBoxRole) {
+    if (ariaRole == RadioButtonRole || ariaRole == CheckBoxRole
+        || ariaRole == MenuItemCheckBoxRole || ariaRole == MenuItemRadioRole) {
         if (equalIgnoringCase(getAttribute(aria_checkedAttr), "true"))
             return true;
         return false;
     }
 
     // Otherwise it's not checked
     return false;
 }
 
 bool AXNodeObject::isClickable() const
@@ skipping 1065 matching lines @@
     float range = maxValueForRange() - minValueForRange();
     float value = valueForRange();
 
     value += range * (percentChange / 100);
     setValue(String::number(value));
 
     axObjectCache()->postNotification(node(), AXObjectCache::AXValueChanged, true);
 }
 
 } // namespace blink