Clean up accessibility enums for use in Chromium.

Source/web/WebAccessibilityObject.cpp

Index: Source/web/WebAccessibilityObject.cpp
diff --git a/Source/web/WebAccessibilityObject.cpp b/Source/web/WebAccessibilityObject.cpp
index e81f18aa15d7f4cafa89f5c4f67c878ed3912ab4..de046001b09f65403ff386efce7bf75f450eda2a 100644
--- a/Source/web/WebAccessibilityObject.cpp
+++ b/Source/web/WebAccessibilityObject.cpp
@@ -599,6 +599,7 @@ bool WebAccessibilityObject::press() const
     return m_private->press();
 }
 
+// Deprecated in favor of role().
 WebAccessibilityRole WebAccessibilityObject::roleValue() const
 {
     if (isDetached())
@@ -607,6 +608,14 @@ WebAccessibilityRole WebAccessibilityObject::roleValue() const
     return static_cast<WebAccessibilityRole>(m_private->roleValue());
 }
 
+WebAXRole WebAccessibilityObject::role() const
+{
+    if (isDetached())
+        return WebKit::WebAXRoleUnknown;
+
+    return static_cast<WebAXRole>(m_private->roleValue());
+}
+
 unsigned WebAccessibilityObject::selectionEnd() const
 {
     if (isDetached())