Add device disabling to OOBE flow

chrome/browser/chromeos/login/screens/device_disabled_screen_actor.h

 // Copyright 2014 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_CHROMEOS_LOGIN_SCREENS_DEVICE_DISABLED_SCREEN_ACTOR_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_DEVICE_DISABLED_SCREEN_ACTOR_H_
 
+#include <string>
+
 namespace chromeos {
 
 // Interface between the device disabled screen and its representation.
 class DeviceDisabledScreenActor {
  public:
   // Allows the representation to access information about the screen.
   class Delegate {
    public:
     virtual ~Delegate() {
     }
 
     // Called when the actor is being destroyed. Note that if the Delegate is
     // destroyed first, it must call SetDelegate(nullptr).
     virtual void OnActorDestroyed(DeviceDisabledScreenActor* actor) = 0;
   };
 
   virtual ~DeviceDisabledScreenActor() {
   }
 
-  virtual void Show() = 0;
+  virtual void Show(const std::string& message) = 0;
   virtual void Hide() = 0;
   virtual void SetDelegate(Delegate* delegate) = 0;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_DEVICE_DISABLED_SCREEN_ACTOR_H_