Added usage of ScreenContext in EulaScreen.

chrome/browser/chromeos/login/screens/eula_view.h

+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_VIEW_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_VIEW_H_
+
+#include <string>
+
+namespace chromeos {
+
+class EulaModel;
+
+// Interface between eula screen and its representation, either WebUI
+// or Views one. Note, do not forget to call OnViewDestroyed in the
+// dtor.
+class EulaView {
+ public:
+  virtual ~EulaView() {}
+
+  virtual void PrepareToShow() = 0;
+  virtual void Show() = 0;
+  virtual void Hide() = 0;
+  virtual void SetModel(EulaModel* model) = 0;
+  virtual void OnPasswordFetched(const std::string& tpm_password) = 0;
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_VIEW_H_