ScreenObserver is renamed to BaseScreenDelegate.

chrome/browser/chromeos/login/screens/mock_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_MOCK_UPDATE_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_MOCK_UPDATE_SCREEN_H_
 
-#include "chrome/browser/chromeos/login/screens/screen_observer.h"
+#include "chrome/browser/chromeos/login/screens/base_screen_delegate.h"
 #include "chrome/browser/chromeos/login/screens/update_screen.h"
 #include "chrome/browser/chromeos/login/screens/update_screen_actor.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace chromeos {
 
 class MockUpdateScreen : public UpdateScreen {
  public:
-  MockUpdateScreen(ScreenObserver* screen_observer, UpdateScreenActor* actor);
+  MockUpdateScreen(BaseScreenDelegate* base_screen_delegate,
+                   UpdateScreenActor* actor);
   virtual ~MockUpdateScreen();
 
   MOCK_METHOD0(StartNetworkCheck, void());
 };
 
 class MockUpdateScreenActor : public UpdateScreenActor {
  public:
   MockUpdateScreenActor();
   virtual ~MockUpdateScreenActor();
 
@@ skipping 12 matching lines @@
   MOCK_METHOD1(ShowCurtain, void(bool enable));
   MOCK_METHOD1(ShowPreparingUpdatesInfo, void(bool enable));
 
  private:
   UpdateScreenActor::Delegate* screen_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_MOCK_UPDATE_SCREEN_H_