Added layout test for aria-orientation and cleaned up code. Also exposed hr element with an orienta…

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 673 matching lines @@
     AXObjectVector tmpNameObjects;
     return textAlternative(false, false, visited, tmpNameFrom, &tmpNameObjects, nameSources);
 }
 
 String AXObject::recursiveTextAlternative(const AXObject& axObj, bool inAriaLabelledByTraversal, AXObjectSet& visited)
 {
     AXNameFrom tmpNameFrom;
     return axObj.textAlternative(true, inAriaLabelledByTraversal, visited, tmpNameFrom, nullptr, nullptr);
 }
 
-// In ARIA 1.1, the default value for aria-orientation changed from horizontal to undefined.
 AccessibilityOrientation AXObject::orientation() const
 {
+    // In ARIA 1.1, the default value for aria-orientation changed from
+    // horizontal to undefined.
     return AccessibilityOrientationUndefined;
 }
 
 static String queryString(WebLocalizedString::Name name)
 {
     return Locale::defaultLocale().queryString(name);
 }
 
 String AXObject::actionVerb() const
 {
@@ skipping 794 matching lines @@
 
 DEFINE_TRACE(AXObject)
 {
     visitor->trace(m_children);
     visitor->trace(m_parent);
     visitor->trace(m_cachedLiveRegionRoot);
     visitor->trace(m_axObjectCache);
 }
 
 } // namespace blink