Make sure the device recovers from policy loss in the consumer case.

chrome/browser/chromeos/login/parallel_authenticator.h

Index: chrome/browser/chromeos/login/parallel_authenticator.h
diff --git a/chrome/browser/chromeos/login/parallel_authenticator.h b/chrome/browser/chromeos/login/parallel_authenticator.h
index fc50c38909ac4d6547dc5cf6e9b2f8097d25d9d5..8f898e1975e7d72b53383c0de4e1451780300757 100644
--- a/chrome/browser/chromeos/login/parallel_authenticator.h
+++ b/chrome/browser/chromeos/login/parallel_authenticator.h
@@ -76,7 +76,8 @@ class ParallelAuthenticator : public Authenticator,
     UNLOCK,          // Screen unlock succeeded.
     ONLINE_FAILED,   // Online login disallowed, but offline succeeded.
     GUEST_LOGIN,     // Logged in guest mode.
-    LOGIN_FAILED     // Login denied.
+    LOGIN_FAILED,    // Login denied.
+    OWNER_REQUIRED   // Login is restricted to the owner only.
   };
 
   explicit ParallelAuthenticator(LoginStatusConsumer* consumer);
@@ -217,6 +218,15 @@ class ParallelAuthenticator : public Authenticator,
   // Returns false if the key can not be loaded/created.
   bool LoadSupplementalUserKey();
 
+  // checks if the current mounted home contains the owner case and either
+  // continues or fails the log-in. Used for policy lost mitigation "safe-mode".
+  void VerifyOwnerOnUIThread();
+
+  // checks if the current mounted home contains the owner case and either
+  // continues or fails the log-in. Used for policy lost mitigation "safe-mode".
+  void FinishVerifyOwnerOnFileThread();
+
+
   // Records OAuth1 access token verification failure for |user_account|.
   void RecordOAuthCheckFailure(const std::string& user_account);
 
@@ -247,7 +257,14 @@ class ParallelAuthenticator : public Authenticator,
   // This allows us to present the same behavior to the caller, regardless
   // of the order in which we receive these results.
   bool already_reported_success_;
-  base::Lock success_lock_;  // A lock around already_reported_success_.
+  base::Lock success_lock_;  // A lock around |already_reported_success_|.
+
+  // Flags signaling whether the owner verification has been done and the result
+  // of it.
+  bool owner_is_verified_;
+  bool user_can_login_;
+  // A lock for |owner_is_verified_| and |current_user_is_owner_|.
+  base::Lock owner_verified_lock_;
 
   // True if we use OAuth-based authentication flow.
   bool using_oauth_;