cros: Break BaseScreenHandler into two classes.

chrome/browser/ui/webui/chromeos/login/eula_screen_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h"
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 65 matching lines @@
                             IDS_CREDITS_APP_DIALOG_HEIGHT_PIXELS));
   dialog->Show();
   // The dialog object will be deleted on dialog close.
 }
 
 }  // namespace
 
 namespace chromeos {
 
 EulaScreenHandler::EulaScreenHandler(CoreOobeView* core_oobe_view)
-    : core_oobe_view_(core_oobe_view) {
+    : BaseScreenHandler(kScreenId), core_oobe_view_(core_oobe_view) {
   set_call_js_prefix(kJsScreenPath);
 }
 
 EulaScreenHandler::~EulaScreenHandler() {
   if (screen_)
     screen_->OnViewDestroyed(this);
 }
 
 void EulaScreenHandler::Show() {
   if (!page_is_ready()) {
     show_on_init_ = true;
     return;
   }
-  ShowScreen(OobeScreen::SCREEN_OOBE_EULA);
+  ShowScreen(kScreenId);
 }
 
 void EulaScreenHandler::Hide() {
 }
 
 void EulaScreenHandler::Bind(EulaScreen* screen) {
   screen_ = screen;
   BaseScreenHandler::SetBaseScreen(screen_);
   if (page_is_ready())
     Initialize();
@@ skipping 102 matching lines @@
       IDS_ABOUT_VERSION_LICENSE_EULA,
       GURL(chrome::kChromeUICreditsURL));
 }
 
 void EulaScreenHandler::HandleOnInstallationSettingsPopupOpened() {
   if (screen_)
     screen_->InitiatePasswordFetch();
 }
 
 }  // namespace chromeos