Change google_util::AppendGoogleLocaleParam to take in the application locale

chrome/browser/chromeos/login/existing_user_controller.cc

Index: chrome/browser/chromeos/login/existing_user_controller.cc
diff --git a/chrome/browser/chromeos/login/existing_user_controller.cc b/chrome/browser/chromeos/login/existing_user_controller.cc
index 5877f86f26ff0e2c376b19540fc5307b60fd4db9..2d92d55ba0fd86b491657716f34302b7c3d477ad 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.cc
+++ b/chrome/browser/chromeos/login/existing_user_controller.cc
@@ -312,8 +312,8 @@ void ExistingUserController::CancelPasswordChangedFlow() {
 
 void ExistingUserController::CreateAccount() {
   content::RecordAction(base::UserMetricsAction("Login.CreateAccount"));
-  guest_mode_url_ =
-      google_util::AppendGoogleLocaleParam(GURL(kCreateAccountURL));
+  guest_mode_url_ = google_util::AppendGoogleLocaleParam(
+      GURL(kCreateAccountURL), g_browser_process->GetApplicationLocale());
   LoginAsGuest();
 }