Add local state flag to force online login for a user

chrome/browser/chromeos/login/user_manager.h

Index: chrome/browser/chromeos/login/user_manager.h
diff --git a/chrome/browser/chromeos/login/user_manager.h b/chrome/browser/chromeos/login/user_manager.h
index d28a12adcd7989d78d0df66be02fb107bc6fb6ed..fe22d64db374deb5d5ace341d23bd47eb0981e2c 100644
--- a/chrome/browser/chromeos/login/user_manager.h
+++ b/chrome/browser/chromeos/login/user_manager.h
@@ -225,6 +225,11 @@ class UserManager {
       const std::string& user_id,
       User::OAuthTokenStatus oauth_token_status) = 0;
 
+  // Saves a flag indicating whether online authentication against GAIA should
+  // be enforced during the user's next sign-in.
+  virtual void SaveForceOnlineSignin(const std::string& user_id,
+                                     bool force_online_signin) = 0;
+
   // Saves user's displayed name in local state preferences.
   // Ignored If there is no such user.
   virtual void SaveUserDisplayName(const std::string& user_id,