Add a enterprise enrollment check screen to OOBE in ChromeOS.

chrome/browser/chromeos/login/enrollment/auto_enrollment_check_step.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_ENROLLMENT_AUTO_ENROLLMENT_CHECK_STEP_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_AUTO_ENROLLMENT_CHECK_STEP_H_
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/chromeos/login/enrollment/auto_enrollment_controller.h"
-#include "chrome/browser/chromeos/login/screens/error_screen.h"
-#include "chrome/browser/chromeos/net/network_portal_detector.h"
-
-namespace chromeos {
-
-class ScreenObserver;
-
-// Handles the control flow after OOBE auto-update completes to wait for the
-// enterprise auto-enrollment check that happens as part of OOBE. This includes
-// keeping track of current auto-enrollment state and displaying and updating
-// the error screen upon failures. Similar to a screen controller, but it
-// doesn't actually drive a dedicated screen.
-class AutoEnrollmentCheckStep : NetworkPortalDetector::Observer {
- public:
-  AutoEnrollmentCheckStep(ScreenObserver* screen_observer,
-                          AutoEnrollmentController* auto_enrollment_controller);
-  virtual ~AutoEnrollmentCheckStep();
-
-  // Hands over OOBE control to this AutoEnrollmentCheckStep. It'll return the
-  // flow back to the caller via the |screen_observer_|'s OnExit function.
-  void Start();
-
-  // NetworkPortalDetector::Observer implementation:
-  virtual void OnPortalDetectionCompleted(
-      const NetworkState* network,
-      const NetworkPortalDetector::CaptivePortalState& state) OVERRIDE;
-
- private:
-  // Handles update notifications regarding the auto-enrollment check.
-  void OnAutoEnrollmentCheckProgressed(policy::AutoEnrollmentState state);
-
-  // Handles a state update, updating the UI and saving the state.
-  void UpdateState(
-      NetworkPortalDetector::CaptivePortalStatus new_captive_portal_status,
-      policy::AutoEnrollmentState new_auto_enrollment_state);
-
-  // Configures the UI to reflect |new_captive_portal_status|. Returns true if
-  // and only if a UI change has been made.
-  bool UpdateCaptivePortalStatus(
-      NetworkPortalDetector::CaptivePortalStatus new_captive_portal_status);
-
-  // Configures the UI to reflect |auto_enrollment_state|. Returns true if and
-  // only if a UI change has been made.
-  bool UpdateAutoEnrollmentState(
-      policy::AutoEnrollmentState auto_enrollment_state);
-
-  // Configures the error screen.
-  void ShowErrorScreen(ErrorScreen::ErrorState error_state);
-
-  // Signals completion. No further code should run after a call to this
-  // function as the owner might destroy |this| in response.
-  void SignalCompletion();
-
-  ScreenObserver* screen_observer_;
-  AutoEnrollmentController* auto_enrollment_controller_;
-
-  scoped_ptr<AutoEnrollmentController::ProgressCallbackList::Subscription>
-      auto_enrollment_progress_subscription_;
-
-  NetworkPortalDetector::CaptivePortalStatus captive_portal_status_;
-  policy::AutoEnrollmentState auto_enrollment_state_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutoEnrollmentCheckStep);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_AUTO_ENROLLMENT_CHECK_STEP_H_