Make UserSelectionScreen::users_ private

chrome/browser/chromeos/login/screens/user_selection_screen.h

Index: chrome/browser/chromeos/login/screens/user_selection_screen.h
diff --git a/chrome/browser/chromeos/login/screens/user_selection_screen.h b/chrome/browser/chromeos/login/screens/user_selection_screen.h
index b986de0cfbb970ef85e6c7aad341db0d60d5e17e..6302e2d4e6650d82330baffd8ec1e28410bd5729 100644
--- a/chrome/browser/chromeos/login/screens/user_selection_screen.h
+++ b/chrome/browser/chromeos/login/screens/user_selection_screen.h
@@ -65,9 +65,6 @@ class UserSelectionScreen : public wm::UserActivityObserver {
  protected:
   LoginDisplayWebUIHandler* handler_;
 
-  // Set of Users that are visible.
-  user_manager::UserList users_;
-
   // Map from public session user IDs to recommended locales set by policy.
   typedef std::map<std::string, std::vector<std::string> >
       PublicSessionRecommendedLocaleMap;
@@ -77,6 +74,9 @@ class UserSelectionScreen : public wm::UserActivityObserver {
   // Whether to show guest login.
   bool show_guest_;
 
+  // Set of Users that are visible.
+  user_manager::UserList users_;
+
   // Map of usernames to their current authentication type. If a user is not
   // contained in the map, it is using the default authentication type.
   std::map<std::string, ScreenlockBridge::LockHandler::AuthType>