ChromeOS NetworkScreenHandler should not call CheckAndResolveLocale on UI thread.

chrome/browser/ui/webui/chromeos/login/terms_of_service_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/terms_of_service_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/terms_of_service_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/terms_of_service_screen_handler.cc
index 9829474554e89dfe8f942cc86ae2e9f5082710a2..b98df05a23b2109a225a193fe9b38c917c53bb59 100644
--- a/chrome/browser/ui/webui/chromeos/login/terms_of_service_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/terms_of_service_screen_handler.cc
@@ -137,9 +137,7 @@ void TermsOfServiceScreenHandler::Initialize() {
 }
 
 void TermsOfServiceScreenHandler::OnLanguageChangedCallback(
-    const std::string& requested_locale,
-    const std::string& loaded_locale,
-    const bool success) {
+    scoped_ptr<locale_util::LanguageSwitchResult> result) {
   // Update the screen contents to the new locale.
   base::DictionaryValue localized_strings;
   static_cast<OobeUI*>(web_ui()->GetController())