ScreenObserver is renamed to BaseScreenDelegate.

chrome/browser/chromeos/login/screens/mock_eula_screen.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/chromeos/login/screens/mock_eula_screen.h"
 
 namespace chromeos {
 
 using ::testing::AtLeast;
 using ::testing::NotNull;
 
-MockEulaScreen::MockEulaScreen(ScreenObserver* screen_observer,
+MockEulaScreen::MockEulaScreen(BaseScreenDelegate* base_screen_delegate,
                                EulaScreenActor* actor)
-    : EulaScreen(screen_observer, actor) {
+    : EulaScreen(base_screen_delegate, actor) {
 }
 
 MockEulaScreen::~MockEulaScreen() {
 }
 
 void MockEulaScreenActor::SetDelegate(Delegate* delegate) {
   delegate_ = delegate;
   MockSetDelegate(delegate);
 }
 
 MockEulaScreenActor::MockEulaScreenActor() {
   EXPECT_CALL(*this, MockSetDelegate(NotNull())).Times(AtLeast(1));
 }
 
 MockEulaScreenActor::~MockEulaScreenActor() {
   if (delegate_)
     delegate_->OnActorDestroyed(this);
 }
 
 }  // namespace chromeos