Add |WebTextDirection toWebTextDirection(TextDirection)|.

Source/web/ExternalPopupMenu.cpp

 /*
  * Copyright (C) 2010 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 182 matching lines @@
         popupItem.label = m_popupMenuClient->itemText(i);
         popupItem.toolTip = m_popupMenuClient->itemToolTip(i);
         if (m_popupMenuClient->itemIsSeparator(i))
             popupItem.type = WebMenuItemInfo::Separator;
         else if (m_popupMenuClient->itemIsLabel(i))
             popupItem.type = WebMenuItemInfo::Group;
         else
             popupItem.type = WebMenuItemInfo::Option;
         popupItem.enabled = m_popupMenuClient->itemIsEnabled(i);
         popupItem.checked = m_popupMenuClient->itemIsSelected(i);
-        if (style.textDirection() == RTL)
-            popupItem.textDirection = WebTextDirectionRightToLeft;
-        else
-            popupItem.textDirection = WebTextDirectionLeftToRight;
+        popupItem.textDirection = toWebTextDirection(style.textDirection());
         popupItem.hasTextDirectionOverride = style.hasTextDirectionOverride();
     }
 
     info->itemHeight = m_popupMenuClient->menuStyle().font().fontMetrics().height();
     info->itemFontSize = static_cast<int>(m_popupMenuClient->menuStyle().font().fontDescription().computedSize());
     info->selectedIndex = toExternalPopupMenuItemIndex(m_popupMenuClient->selectedIndex());
     info->rightAligned = m_popupMenuClient->menuStyle().textDirection() == RTL;
     info->allowMultipleSelection = m_popupMenuClient->multiple();
     info->items = items;
 }
@@ skipping 27 matching lines @@
         if (m_popupMenuClient->itemStyle(i).isDisplayNone())
             continue;
         if (popupMenuItemIndex == i)
             return indexTracker;
         ++indexTracker;
     }
     return -1;
 }
 
 } // namespace blink