ScreenObserver is renamed to BaseScreenDelegate.

chrome/browser/chromeos/login/screens/update_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_UPDATE_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_UPDATE_SCREEN_H_
 
 #include <set>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
 #include "chrome/browser/chromeos/login/screens/update_screen_actor.h"
 #include "chromeos/dbus/update_engine_client.h"
 #include "chromeos/network/portal_detector/network_portal_detector.h"
 #include "components/pairing/host_pairing_controller.h"
 
 namespace chromeos {
 
+class BaseScreenDelegate;
 class ErrorScreen;
 class ErrorScreensHistogramHelper;
 class NetworkState;
 class ScreenManager;
-class ScreenObserver;
 
 // Controller for the update screen. It does not depend on the specific
 // implementation of the screen showing (Views of WebUI based), the dependency
 // is moved to the UpdateScreenActor instead.
 class UpdateScreen : public UpdateEngineClient::Observer,
                      public UpdateScreenActor::Delegate,
                      public BaseScreen,
                      public NetworkPortalDetector::Observer {
  public:
-  UpdateScreen(ScreenObserver* screen_observer,
+  UpdateScreen(BaseScreenDelegate* base_screen_delegate,
                UpdateScreenActor* actor,
                pairing_chromeos::HostPairingController* remora_controller);
   virtual ~UpdateScreen();
 
   static UpdateScreen* Get(ScreenManager* manager);
 
   // Overridden from BaseScreen.
   virtual void PrepareToShow() override;
   virtual void Show() override;
   virtual void Hide() override;
@@ skipping 15 matching lines @@
   static bool HasInstance(UpdateScreen* inst);
 
   void SetIgnoreIdleStatus(bool ignore_idle_status);
 
   enum ExitReason {
      REASON_UPDATE_CANCELED = 0,
      REASON_UPDATE_INIT_FAILED,
      REASON_UPDATE_NON_CRITICAL,
      REASON_UPDATE_ENDED
   };
-  // Reports update results to the ScreenObserver.
+  // Reports update results to the BaseScreenDelegate.
   virtual void ExitUpdate(ExitReason reason);
 
   // UpdateEngineClient::Observer implementation:
   virtual void UpdateStatusChanged(
       const UpdateEngineClient::Status& status) override;
 
   // NetworkPortalDetector::Observer implementation:
   virtual void OnPortalDetectionCompleted(
       const NetworkState* network,
       const NetworkPortalDetector::CaptivePortalState& state) override;
@@ skipping 93 matching lines @@
   scoped_ptr<ErrorScreensHistogramHelper> histogram_helper_;
 
   base::WeakPtrFactory<UpdateScreen> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_UPDATE_SCREEN_H_