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

Source/modules/accessibility/AXObject.cpp

Index: Source/modules/accessibility/AXObject.cpp
diff --git a/Source/modules/accessibility/AXObject.cpp b/Source/modules/accessibility/AXObject.cpp
index b90b59f053018744656e2be17d1e83da8a5a019f..073450391f8a5868718099fa135cea6e1cea8ba7 100644
--- a/Source/modules/accessibility/AXObject.cpp
+++ b/Source/modules/accessibility/AXObject.cpp
@@ -691,9 +691,10 @@ String AXObject::recursiveTextAlternative(const AXObject& axObj, bool inAriaLabe
     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;
 }