Add |WebTextDirection toWebTextDirection(TextDirection)|.

Source/web/PopupContainer.cpp

 /*
  * Copyright (c) 2011, 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 473 matching lines @@
     const Vector<PopupItem*>& inputItems = popupData();
 
     WebVector<WebMenuItemInfo> outputItems(inputItems.size());
 
     for (size_t i = 0; i < inputItems.size(); ++i) {
         const PopupItem& inputItem = *inputItems[i];
         WebMenuItemInfo& outputItem = outputItems[i];
 
         outputItem.label = inputItem.label;
         outputItem.enabled = inputItem.enabled;
-        if (inputItem.textDirection == RTL)
-            outputItem.textDirection = WebTextDirectionRightToLeft;
-        else
-            outputItem.textDirection = WebTextDirectionLeftToRight;
+        outputItem.textDirection = toWebTextDirection(inputItem.textDirection);
         outputItem.hasTextDirectionOverride = inputItem.hasTextDirectionOverride;
 
         switch (inputItem.type) {
         case PopupItem::TypeOption:
             outputItem.type = WebMenuItemInfo::Option;
             break;
         case PopupItem::TypeGroup:
             outputItem.type = WebMenuItemInfo::Group;
             break;
         case PopupItem::TypeSeparator:
             outputItem.type = WebMenuItemInfo::Separator;
             break;
         }
     }
 
     info->itemHeight = menuItemHeight();
     info->itemFontSize = menuItemFontSize();
     info->selectedIndex = selectedIndex();
     info->items.swap(outputItems);
     info->rightAligned = menuStyle().textDirection() == RTL;
 }
 
 } // namespace blink