chromeos: Convert system tray session length limit to mojo

chrome/browser/ui/ash/session_controller_client.h

 // Copyright 2016 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_UI_ASH_SESSION_CONTROLLER_CLIENT_H_
 #define CHROME_BROWSER_UI_ASH_SESSION_CONTROLLER_CLIENT_H_
 
 #include <vector>
 
 #include "ash/public/interfaces/session_controller.mojom.h"
@@ skipping 83 matching lines @@
   static void DoSwitchActiveUser(const AccountId& account_id);
   static void DoCycleActiveUser(ash::CycleUserDirection direction);
 
   // Flushes the mojo pipe to ash.
   static void FlushForTesting();
 
  private:
   FRIEND_TEST_ALL_PREFIXES(SessionControllerClientTest, SendUserSession);
   FRIEND_TEST_ALL_PREFIXES(SessionControllerClientTest, SupervisedUser);
   FRIEND_TEST_ALL_PREFIXES(SessionControllerClientTest, UserPrefsChange);
+  FRIEND_TEST_ALL_PREFIXES(SessionControllerClientTest, SessionLengthLimit);
 
   // Called when the login profile is ready.
   void OnLoginUserProfilePrepared(Profile* profile);
 
   // Sends the user session info for a given profile.
   void SendUserSessionForProfile(Profile* profile);
 
   // Connects to the |session_controller_| interface.
   void ConnectToSessionController();
 
   // Sends session info to ash.
   void SendSessionInfoIfChanged();
 
   // Sends the user session info.
   void SendUserSession(const user_manager::User& user);
 
   // Sends the order of user sessions to ash.
   void SendUserSessionOrder();
 
+  // Sends the session length time limit to ash.
+  void SendSessionLengthLimit();
+
   // Binds to the client interface.
   mojo::Binding<ash::mojom::SessionControllerClient> binding_;
 
   // SessionController interface in ash.
   ash::mojom::SessionControllerPtr session_controller_;
 
   // Whether the primary user session info is sent to ash.
   bool primary_user_session_sent_ = false;
 
   // If the session is for a supervised user, the profile of that user.
   // Chrome OS only supports a single supervised user in a session.
   Profile* supervised_user_profile_ = nullptr;
 
   content::NotificationRegistrar registrar_;
 
   // Pref change observers to update session info when a relevant user pref
   // changes. There is one observer per user and they have no particular order,
   // i.e. they don't much the user session order.
   std::vector<std::unique_ptr<PrefChangeRegistrar>> pref_change_registrars_;
 
+  // Observes changes to Local State prefs.
+  std::unique_ptr<PrefChangeRegistrar> local_state_registrar_;
+
   // Used to suppress duplicate IPCs to ash.
   ash::mojom::SessionInfoPtr last_sent_session_info_;
   ash::mojom::UserSessionPtr last_sent_user_session_;
 
   base::WeakPtrFactory<SessionControllerClient> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionControllerClient);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_SESSION_CONTROLLER_CLIENT_H_