Added usage of ScreenContext in EulaScreen.

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

-// 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.
-
-#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_ACTOR_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_ACTOR_H_
-
-#include <string>
-
-#include "ui/gfx/size.h"
-#include "url/gurl.h"
-
-namespace chromeos {
-
-// Interface between eula screen and its representation, either WebUI or
-// Views one. Note, do not forget to call OnActorDestroyed in the dtor.
-class EulaScreenActor {
- public:
-  // Allows us to get info from eula screen that we need.
-  class Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    // Returns URL of the OEM EULA page that should be displayed using current
-    // locale and manifest. Returns empty URL otherwise.
-    virtual GURL GetOemEulaUrl() const = 0;
-
-    // Called when screen is exited. |accepted| indicates if EULA was
-    // accepted or not.
-    virtual void OnExit(bool accepted, bool usage_stats_enabled) = 0;
-
-    // Initiate TPM password fetch. Will call actor's OnPasswordFetched() when
-    // done.
-    virtual void InitiatePasswordFetch() = 0;
-
-    // Returns true if usage statistics reporting is enabled.
-    virtual bool IsUsageStatsEnabled() const = 0;
-
-    // This method is called, when actor is being destroyed. Note, if Delegate
-    // is destroyed earlier then it has to call SetDelegate(NULL).
-    virtual void OnActorDestroyed(EulaScreenActor* actor) = 0;
-  };
-
-  virtual ~EulaScreenActor() {}
-
-  virtual void PrepareToShow() = 0;
-  virtual void Show() = 0;
-  virtual void Hide() = 0;
-  virtual void SetDelegate(Delegate* delegate) = 0;
-  virtual void OnPasswordFetched(const std::string& tpm_password) = 0;
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_ACTOR_H_