ChromeOS NetworkScreenHandler should not call CheckAndResolveLocale on UI thread.

chrome/browser/chromeos/login/ui/login_display_host_impl.cc

Index: chrome/browser/chromeos/login/ui/login_display_host_impl.cc
diff --git a/chrome/browser/chromeos/login/ui/login_display_host_impl.cc b/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
index 20fae60e2a2617cb30a95ebe686a0bd3aa1256e5..cefef07363fd9a0405c512796f13cad82b223c7b 100644
--- a/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
+++ b/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
@@ -199,11 +199,10 @@ struct ShowLoginWizardSwitchLanguageCallbackData {
 
 void OnLanguageSwitchedCallback(
     scoped_ptr<ShowLoginWizardSwitchLanguageCallbackData> self,
-    const std::string& locale,
-    const std::string& loaded_locale,
-    const bool success) {
-  if (!success)
-    LOG(WARNING) << "Locale could not be found for '" << locale << "'";
+    scoped_ptr<chromeos::locale_util::LanguageSwitchResult> result) {
+  if (!result->success)
+    LOG(WARNING) << "Locale could not be found for '"
+                 << result->requested_locale << "'";
 
   ShowLoginWizardFinish(
       self->first_screen_name, self->startup_manifest, self->display_host);