Added usage of ScreenContext in EulaScreen.

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

+// Copyright 2014 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_model.h"
+
+#include "chrome/browser/chromeos/login/wizard_controller.h"
+
+namespace chromeos {
+
+EulaModel::EulaModel(BaseScreenDelegate* base_screen_delegate)
+    : BaseScreen(base_screen_delegate) {
+}
+
+EulaModel::~EulaModel() {
+}
+
+std::string EulaModel::GetName() const {
+  return WizardController::kEulaScreenName;
+}
+
+}  // namespace chromeos