ScreenObserver is renamed to BaseScreenDelegate.

chrome/browser/chromeos/login/screens/base_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/base_screen.h"
 
 #include "base/logging.h"
-#include "chrome/browser/chromeos/login/screens/screen_observer.h"
+#include "chrome/browser/chromeos/login/screens/base_screen_delegate.h"
 
 namespace chromeos {
 
-BaseScreen::BaseScreen(ScreenObserver* screen_observer)
-    : screen_observer_(screen_observer) {
+BaseScreen::BaseScreen(BaseScreenDelegate* base_screen_delegate)
+    : base_screen_delegate_(base_screen_delegate) {
 }
 
 BaseScreen::~BaseScreen() {
 }
 
 void BaseScreen::Initialize(::login::ScreenContext* context) {
 }
 
 void BaseScreen::OnShow() {
 }
@@ skipping 25 matching lines @@
 
 void BaseScreen::OnButtonPressed(const std::string& button_id) {
   LOG(WARNING) << "BaseScreen::OnButtonPressed(): button_id=" << button_id;
 }
 
 void BaseScreen::OnContextChanged(const base::DictionaryValue* diff) {
   LOG(WARNING) << "BaseScreen::OnContextChanged()";
 }
 
 }  // namespace chromeos