Abandon user sign in when policy is retrieved before session started

chromeos/dbus/fake_session_manager_client.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_DBUS_FAKE_SESSION_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_FAKE_SESSION_MANAGER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 27 matching lines @@
   void StartSession(const cryptohome::Identification& cryptohome_id) override;
   void StopSession() override;
   void NotifySupervisedUserCreationStarted() override;
   void NotifySupervisedUserCreationFinished() override;
   void StartDeviceWipe() override;
   void RequestLockScreen() override;
   void NotifyLockScreenShown() override;
   void NotifyLockScreenDismissed() override;
   void RetrieveActiveSessions(const ActiveSessionsCallback& callback) override;
   void RetrieveDevicePolicy(const RetrievePolicyCallback& callback) override;
-  std::string BlockingRetrieveDevicePolicy() override;
+  RetrievePolicyResponseType BlockingRetrieveDevicePolicy(
+      std::string* policy_out) override;
   void RetrievePolicyForUser(const cryptohome::Identification& cryptohome_id,
                              const RetrievePolicyCallback& callback) override;
-  std::string BlockingRetrievePolicyForUser(
-      const cryptohome::Identification& cryptohome_id) override;
+  RetrievePolicyResponseType BlockingRetrievePolicyForUser(
+      const cryptohome::Identification& cryptohome_id,
+      std::string* policy_out) override;
   void RetrieveDeviceLocalAccountPolicy(
       const std::string& account_id,
       const RetrievePolicyCallback& callback) override;
-  std::string BlockingRetrieveDeviceLocalAccountPolicy(
-      const std::string& account_id) override;
+  RetrievePolicyResponseType BlockingRetrieveDeviceLocalAccountPolicy(
+      const std::string& account_id,
+      std::string* policy_out) override;
   void StoreDevicePolicy(const std::string& policy_blob,
                          const StorePolicyCallback& callback) override;
   void StorePolicyForUser(const cryptohome::Identification& cryptohome_id,
                           const std::string& policy_blob,
                           const StorePolicyCallback& callback) override;
   void StoreDeviceLocalAccountPolicy(
       const std::string& account_id,
       const std::string& policy_blob,
       const StorePolicyCallback& callback) override;
   bool SupportsRestartToApplyUserFlags() const override;
@@ skipping 71 matching lines @@
   int notify_lock_screen_dismissed_call_count_;
 
   bool arc_available_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeSessionManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FAKE_SESSION_MANAGER_CLIENT_H_