Add |WebTextDirection toWebTextDirection(TextDirection)|.

Source/web/WebNotification.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
     return m_private.get() < other.m_private.get();
 }
 
 WebString WebNotification::title() const
 {
     return m_private->title();
 }
 
 WebTextDirection WebNotification::direction() const
 {
-    return (m_private->direction() == RTL) ?
-        WebTextDirectionRightToLeft :
-        WebTextDirectionLeftToRight;
+    return toWebTextDirection(m_private->direction());
 }
 
 WebString WebNotification::lang() const
 {
     return m_private->lang();
 }
 
 WebString WebNotification::body() const
 {
     return m_private->body();
@@ skipping 36 matching lines @@
 {
 }
 
 WebNotification& WebNotification::operator=(Notification* notification)
 {
     m_private = notification;
     return *this;
 }
 
 } // namespace blink