cros: Prevent shut down on lid-close during migration.

chromeos/dbus/power_policy_controller.h

 // Copyright (c) 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_POWER_POLICY_CONTROLLER_H_
 #define CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 94 matching lines @@
 
   // Unregisters a request previously created via an Add*WakeLock() call
   // and sends an updated policy.
   void RemoveWakeLock(int id);
 
   // Adjusts policy while Chrome is exiting. The lid-closed action
   // is overridden to ensure that the system doesn't suspend or shut
   // down.
   void NotifyChromeIsExiting();
 
+  void SetEncryptionMigrationActive(bool active);

[Daniel Erat, 2017/05/30 13:39:42]

add a comment documenting what this does, e.g.

// Adjusts policy when the migration of a user homedir to a new
// encryption format starts or stops. While migration is active,
// the lid-closed action is overridden to ensure the system
// doesn't shut down.

[dspaid, 2017/05/30 23:37:22]

Done.

+
   // PowerManagerClient::Observer implementation:
   void PowerManagerRestarted() override;
 
  private:
   explicit PowerPolicyController(PowerManagerClient* client);
   ~PowerPolicyController() override;
 
   friend class PowerPrefsTest;
 
   // Details about a wake lock added via Add*WakeLock().
@@ skipping 41 matching lines @@
   // Should TYPE_SCREEN or TYPE_DIM entries in |wake_locks_| be honored?
   // If false, screen wake locks are just treated as TYPE_SYSTEM instead.
   bool honor_screen_wake_locks_;
 
   // Next ID to be used by an Add*WakeLock() request.
   int next_wake_lock_id_;
 
   // True if Chrome is in the process of exiting.
   bool chrome_is_exiting_;
 
+  // True if a user homedir is in the process of migrating encryption formats.
+  bool encryption_migration_active_;
+
   DISALLOW_COPY_AND_ASSIGN(PowerPolicyController);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_POWER_POLICY_CONTROLLER_H_