Propogate the UI language on the command line and expose to Flash.

ppapi/proxy/ppb_flash_proxy.cc

Index: ppapi/proxy/ppb_flash_proxy.cc
diff --git a/ppapi/proxy/ppb_flash_proxy.cc b/ppapi/proxy/ppb_flash_proxy.cc
index f2da43a5c71889d2f530ae463fa3e4e68eecdf38..a6b7e62569e46e56b7c80060586543040f16617b 100644
--- a/ppapi/proxy/ppb_flash_proxy.cc
+++ b/ppapi/proxy/ppb_flash_proxy.cc
@@ -287,7 +287,6 @@ int32_t PPB_Flash_Proxy::GetSettingInt(PP_Instance instance,
 
 PP_Var PPB_Flash_Proxy::GetSetting(PP_Instance instance,
                                    PP_FlashSetting setting) {
-  ReceiveSerializedVarReturnValue result;
   PluginDispatcher* plugin_dispatcher =
       static_cast<PluginDispatcher*>(dispatcher());
   switch (setting) {
@@ -299,6 +298,9 @@ PP_Var PPB_Flash_Proxy::GetSetting(PP_Instance instance,
     case PP_FLASHSETTING_STAGE3DENABLED:
       return PP_MakeBool(PP_FromBool(
           plugin_dispatcher->preferences().is_stage3d_supported));
+    case PP_FLASHSETTING_LANGUAGE:
+      return StringVar::StringToPPVar(
+          PluginGlobals::Get()->plugin_proxy_delegate()->GetUILanguage());
   }
   return PP_MakeUndefined();
 }