ash: Use enum for SessionController::CycleActiveUser

chrome/browser/ui/ash/session_controller_client.h

Index: chrome/browser/ui/ash/session_controller_client.h
diff --git a/chrome/browser/ui/ash/session_controller_client.h b/chrome/browser/ui/ash/session_controller_client.h
index a5dff9c8a6543c584ee65a0ea1df3a2119d448a7..97ae4e2282de65291761df153a36e848a2909a30 100644
--- a/chrome/browser/ui/ash/session_controller_client.h
+++ b/chrome/browser/ui/ash/session_controller_client.h
@@ -34,7 +34,7 @@ class SessionControllerClient
   // ash::mojom::SessionControllerClient:
   void RequestLockScreen() override;
   void SwitchActiveUser(const AccountId& account_id) override;
-  void CycleActiveUser(bool next_user) override;
+  void CycleActiveUser(ash::CycleUserDirection direction) override;
 
   // user_manager::UserManager::UserSessionStateObserver:
   void ActiveUserChanged(const user_manager::User* active_user) override;
@@ -52,7 +52,7 @@ class SessionControllerClient
   static ash::AddUserSessionPolicy GetAddUserSessionPolicy();
   static void DoLockScreen();
   static void DoSwitchActiveUser(const AccountId& account_id);
-  static void DoCycleActiveUser(bool next_user);
+  static void DoCycleActiveUser(ash::CycleUserDirection direction);
 
   // Flushes the mojo pipe to ash.
   static void FlushForTesting();