Directly inline shared WebUI CSS declarations into the security and supervised user interstitials.

chrome/browser/ui/webui/signin/user_manager_ui.cc

Index: chrome/browser/ui/webui/signin/user_manager_ui.cc
diff --git a/chrome/browser/ui/webui/signin/user_manager_ui.cc b/chrome/browser/ui/webui/signin/user_manager_ui.cc
index 0bbd4f14e1bdbe7287705a893880625741a65b65..9d0deabecf3077508e06ca5077c54033a78df5e0 100644
--- a/chrome/browser/ui/webui/signin/user_manager_ui.cc
+++ b/chrome/browser/ui/webui/signin/user_manager_ui.cc
@@ -59,7 +59,7 @@ content::WebUIDataSource* UserManagerUI::CreateUIDataSource(
 void UserManagerUI::GetLocalizedStrings(
     base::DictionaryValue* localized_strings) {
   user_manager_screen_handler_->GetLocalizedValues(localized_strings);
-  webui::SetFontAndTextDirection(localized_strings);
+  webui::SetTextDirection(localized_strings);
 
 #if defined(GOOGLE_CHROME_BUILD)
   localized_strings->SetString("buildType", "chrome");