ScreenObserver is renamed to BaseScreenDelegate.

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

 // Copyright (c) 2012 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_ERROR_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_ERROR_SCREEN_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
 #include "chrome/browser/chromeos/login/screens/error_screen_actor_delegate.h"
 #include "chrome/browser/chromeos/login/ui/oobe_display.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
 #include "chromeos/login/auth/login_performer.h"
 
 namespace chromeos {
 
-class ScreenObserver;
+class BaseScreenDelegate;
 
 // Controller for the error screen.
 class ErrorScreen : public BaseScreen,
                     public ErrorScreenActorDelegate,
                     public LoginPerformer::Delegate {
  public:
   enum UIState {
     UI_STATE_UNKNOWN = 0,
     UI_STATE_UPDATE,
     UI_STATE_SIGNIN,
     UI_STATE_SUPERVISED,
     UI_STATE_KIOSK_MODE,
     UI_STATE_LOCAL_STATE_ERROR,
     UI_STATE_AUTO_ENROLLMENT_ERROR,
     UI_STATE_ROLLBACK_ERROR,
   };
 
   enum ErrorState {
     ERROR_STATE_UNKNOWN = 0,
     ERROR_STATE_PORTAL,
     ERROR_STATE_OFFLINE,
     ERROR_STATE_PROXY,
     ERROR_STATE_AUTH_EXT_TIMEOUT,
     ERROR_STATE_NONE,
     // States above are being logged to histograms.
     // Please keep ERROR_STATE_NONE as the last one of the histogram values.
     ERROR_STATE_KIOSK_ONLINE,
   };
 
-  ErrorScreen(ScreenObserver* screen_observer, ErrorScreenActor* actor);
+  ErrorScreen(BaseScreenDelegate* base_screen_delegate,
+              ErrorScreenActor* actor);
   virtual ~ErrorScreen();
 
   // BaseScreen implementation.
   virtual void PrepareToShow() override;
   virtual void Show() override;
   virtual void Hide() override;
   virtual std::string GetName() const override;
 
   // ErrorScreenActorDelegate implementation:
   virtual void OnErrorShow() override;
@@ skipping 55 matching lines @@
   scoped_ptr<LoginPerformer> guest_login_performer_;
 
   base::WeakPtrFactory<ErrorScreen> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ErrorScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_ERROR_SCREEN_H_