cros: Move BaseScreenDelegate::ExitCodes into separate file, ScreenExitCode.

chrome/browser/chromeos/login/screens/eula_screen.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/chromeos/login/screens/eula_screen.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 80 matching lines @@
     view_->Show();
 }
 
 void EulaScreen::Hide() {
   if (view_)
     view_->Hide();
 }
 
 void EulaScreen::OnUserAction(const std::string& action_id) {
   if (action_id == kUserActionAcceptButtonClicked)
-    Finish(BaseScreenDelegate::EULA_ACCEPTED);
+    Finish(ScreenExitCode::EULA_ACCEPTED);
   else if (action_id == kUserActionBackButtonClicked)
-    Finish(BaseScreenDelegate::EULA_BACK);
+    Finish(ScreenExitCode::EULA_BACK);
   else
     BaseScreen::OnUserAction(action_id);
 }
 
 void EulaScreen::OnContextKeyUpdated(
     const ::login::ScreenContext::KeyType& key) {
   if (key == kContextKeyUsageStatsEnabled && delegate_) {
     delegate_->SetUsageStatisticsReporting(
         context_.GetBoolean(kContextKeyUsageStatsEnabled));
   }
 }
 
 void EulaScreen::OnPasswordFetched(const std::string& tpm_password) {
   tpm_password_ = tpm_password;
   if (view_)
     view_->OnPasswordFetched(tpm_password_);
 }
 
 }  // namespace chromeos