Fix support for accessible action verbs and performing the default action.

third_party/WebKit/Source/modules/accessibility/AXObject.cpp

 /*
  * Copyright (C) 2008, 2009, 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:
  *
  * 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 899 matching lines @@
     return AccessibilityOrientationUndefined;
 }
 
 static String queryString(WebLocalizedString::Name name)
 {
     return Locale::defaultLocale().queryString(name);
 }
 
 String AXObject::actionVerb() const
 {
-    // FIXME: Need to add verbs for select elements.
+    if (!actionElement())
+        return emptyString();
 
     switch (roleValue()) {
     case ButtonRole:
     case ToggleButtonRole:
         return queryString(WebLocalizedString::AXButtonActionVerb);
     case TextFieldRole:
         return queryString(WebLocalizedString::AXTextFieldActionVerb);
     case RadioButtonRole:
         return queryString(WebLocalizedString::AXRadioButtonActionVerb);
     case CheckBoxRole:
     case SwitchRole:
         return queryString(isChecked() ? WebLocalizedString::AXCheckedCheckBoxActionVerb : WebLocalizedString::AXUncheckedCheckBoxActionVerb);
     case LinkRole:
         return queryString(WebLocalizedString::AXLinkActionVerb);
     case PopUpButtonRole:
-        // FIXME: Implement.
-        return String();
-    case MenuListPopupRole:
-        // FIXME: Implement.
-        return String();
+        return queryString(WebLocalizedString::AXPopUpButtonActionVerb);
     default:
-        return emptyString();
+        return queryString(WebLocalizedString::AXDefaultActionVerb);
     }
 }
 
 AccessibilityButtonState AXObject::checkboxOrRadioValue() const
 {
     const AtomicString& checkedAttribute = getAttribute(aria_checkedAttr);
     if (equalIgnoringCase(checkedAttribute, "true"))
         return ButtonStateOn;
 
     if (equalIgnoringCase(checkedAttribute, "mixed")) {
@@ skipping 735 matching lines @@
 
 DEFINE_TRACE(AXObject)
 {
     visitor->trace(m_children);
     visitor->trace(m_parent);
     visitor->trace(m_cachedLiveRegionRoot);
     visitor->trace(m_axObjectCache);
 }
 
 } // namespace blink