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

chromeos/dbus/power_policy_controller.h

Index: chromeos/dbus/power_policy_controller.h
diff --git a/chromeos/dbus/power_policy_controller.h b/chromeos/dbus/power_policy_controller.h
index 3d89a23a409108b920b107812027cd2057081627..530360ff0c7299ee8f83c981ce76d517c966db09 100644
--- a/chromeos/dbus/power_policy_controller.h
+++ b/chromeos/dbus/power_policy_controller.h
@@ -112,6 +112,12 @@ class CHROMEOS_EXPORT PowerPolicyController
   // down.
   void NotifyChromeIsExiting();
 
+  // 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.
+  void SetEncryptionMigrationActive(bool active);
+
   // PowerManagerClient::Observer implementation:
   void PowerManagerRestarted() override;
 
@@ -173,6 +179,9 @@ class CHROMEOS_EXPORT PowerPolicyController
   // 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);
 };