Elements with an ARIA role of treeitem should be able to get their accessible name from their conte…

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 1694 matching lines @@
     case MenuItemCheckBoxRole:
     case MenuItemRadioRole:
     case MenuListOptionRole:
     case PopUpButtonRole:
     case RadioButtonRole:
     case StaticTextRole:
     case StatusRole:
     case SwitchRole:
     case TabRole:
     case ToggleButtonRole:
+    case TreeItemRole:
         return true;
     default:
         return false;
     }
 }
 
 AccessibilityRole AXObject::buttonRoleType() const
 {
     // If aria-pressed is present, then it should be exposed as a toggle button.
     // http://www.w3.org/TR/wai-aria/states_and_properties#aria-pressed
@@ skipping 23 matching lines @@
 
 DEFINE_TRACE(AXObject)
 {
     visitor->trace(m_children);
     visitor->trace(m_parent);
     visitor->trace(m_cachedLiveRegionRoot);
     visitor->trace(m_axObjectCache);
 }
 
 } // namespace blink