Reauthenticate the user before launching Smart Lock setup app.

chrome/browser/signin/easy_unlock_service.h

 // Copyright 2014 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 CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_H_
 #define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 197 matching lines @@
   void ResetScreenlockState();
 
   // Updates |screenlock_state_handler_|'s hardlocked state.
   void SetScreenlockHardlockedState(
       EasyUnlockScreenlockStateHandler::HardlockState state);
 
   const EasyUnlockScreenlockStateHandler* screenlock_state_handler() const {
     return screenlock_state_handler_.get();
   }
 
+  // Saves hardlock state for the given user. Update UI if the currently
+  // associated user is the same.
+  void SetHardlockStateForUser(
+      const std::string& user_id,
+      EasyUnlockScreenlockStateHandler::HardlockState state);
+
  private:
   // A class to detect whether a bluetooth adapter is present.
   class BluetoothDetector;
 
   // Initializes the service after ExtensionService is ready.
   void Initialize();
 
   // Gets |screenlock_state_handler_|. Returns NULL if Easy Unlock is not
   // allowed. Otherwise, if |screenlock_state_handler_| is not set, an instance
   // is created. Do not cache the returned value, as it may go away if Easy
   // Unlock gets disabled.
   EasyUnlockScreenlockStateHandler* GetScreenlockStateHandler();
 
   // Callback when Bluetooth adapter present state changes.
   void OnBluetoothAdapterPresentChanged();
 
-  // Saves hardlock state for the given user. Update UI if the currently
-  // associated user is the same.
-  void SetHardlockStateForUser(
-      const std::string& user_id,
-      EasyUnlockScreenlockStateHandler::HardlockState state);
-
 #if defined(OS_CHROMEOS)
   // Callback for get key operation from CheckCryptohomeKeysAndMaybeHardlock.
   void OnCryptohomeKeysFetchedForChecking(
       const std::string& user_id,
       const std::set<std::string> paired_devices,
       bool success,
       const chromeos::EasyUnlockDeviceKeyDataList& key_data_list);
 #endif
 
   // Updates the service to state for handling system suspend.
@@ skipping 20 matching lines @@
   bool shut_down_;
 
   ObserverList<EasyUnlockServiceObserver> observers_;
 
   base::WeakPtrFactory<EasyUnlockService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockService);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_H_