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

Source/modules/accessibility/AXLayoutObject.cpp

Index: Source/modules/accessibility/AXLayoutObject.cpp
diff --git a/Source/modules/accessibility/AXLayoutObject.cpp b/Source/modules/accessibility/AXLayoutObject.cpp
index 6506ed1826b7d71bbd889e361a4fa79becbe5311..0b2f1b7ca6d723b65499b64ac8e00184e1b7ab37 100644
--- a/Source/modules/accessibility/AXLayoutObject.cpp
+++ b/Source/modules/accessibility/AXLayoutObject.cpp
@@ -842,49 +842,6 @@ float AXLayoutObject::fontSize() const
     return style->computedFontSize();
 }
 
-AccessibilityOrientation AXLayoutObject::orientation() const
-{
-    const AtomicString& ariaOrientation = getAttribute(aria_orientationAttr);
-    AccessibilityOrientation axorientation = AccessibilityOrientationUndefined;
-
-    // For TreeGridRole, roleValue() can't be compared because its overridden
-    // in AXTable::roleValue()
-    if (ariaRoleAttribute() == TreeGridRole) {
-        if (equalIgnoringCase(ariaOrientation, "horizontal"))
-            axorientation = AccessibilityOrientationHorizontal;
-        if (equalIgnoringCase(ariaOrientation, "vertical"))
-            axorientation = AccessibilityOrientationVertical;
-        return axorientation;
-    }
-
-    switch (roleValue()) {
-    case ComboBoxRole:
-    case ListBoxRole:
-    case MenuRole:
-    case ScrollBarRole:
-    case TreeRole:
-        axorientation = AccessibilityOrientationVertical;
-        break;
-    case MenuBarRole:
-    case SliderRole:
-    case SplitterRole:
-    case TabListRole:
-    case ToolbarRole:
-        axorientation = AccessibilityOrientationHorizontal;
-        break;
-    case RadioGroupRole:
-        break;
-    default:
-        return AXObject::orientation();
-    }
-
-    if (equalIgnoringCase(ariaOrientation, "horizontal"))
-        axorientation = AccessibilityOrientationHorizontal;
-    if (equalIgnoringCase(ariaOrientation, "vertical"))
-        axorientation = AccessibilityOrientationVertical;
-    return axorientation;
-}
-
 String AXLayoutObject::text() const
 {
     if (isPasswordFieldAndShouldHideValue()) {