chromeos: Migrate SignOut and RequestRestartForUpdate to mojo interface

chrome/browser/ui/ash/system_tray_delegate_chromeos.h

 // Copyright 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 CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
 #define CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 71 matching lines @@
   std::string GetSupervisedUserManager() const override;
   base::string16 GetSupervisedUserManagerName() const override;
   base::string16 GetSupervisedUserMessage() const override;
   bool IsUserSupervised() const override;
   bool IsUserChild() const override;
   void GetSystemUpdateInfo(ash::UpdateInfo* info) const override;
   bool ShouldShowSettings() const override;
   bool ShouldShowNotificationTray() const override;
   void ShowEnterpriseInfo() override;
   void ShowUserLogin() override;
-  void SignOut() override;
-  void RequestRestartForUpdate() override;
   void GetAvailableBluetoothDevices(ash::BluetoothDeviceList* list) override;
   void BluetoothStartDiscovering() override;
   void BluetoothStopDiscovering() override;
   void ConnectToBluetoothDevice(const std::string& address) override;
   bool IsBluetoothDiscovering() const override;
   void GetCurrentIME(ash::IMEInfo* info) override;
   void GetAvailableIMEList(ash::IMEInfoList* list) override;
   void GetCurrentIMEProperties(ash::IMEPropertyInfoList* list) override;
   void SwitchIME(const std::string& ime_id) override;
   void ActivateIMEProperty(const std::string& key) override;
@@ skipping 149 matching lines @@
 
   base::WeakPtrFactory<SystemTrayDelegateChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegateChromeOS);
 };
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate();
 
 }  // namespace chromeos
 #endif  // CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_