chromeos: Remove ScreenLockLibrary.

chrome/browser/chromeos/cros/screen_lock_library.h

-// Copyright (c) 2011 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_CROS_SCREEN_LOCK_LIBRARY_H_
-#define CHROME_BROWSER_CHROMEOS_CROS_SCREEN_LOCK_LIBRARY_H_
-#pragma once
-
-namespace chromeos {
-
-// This interface handles the interaction with the ChromeOS screen lock API.
-class ScreenLockLibrary {
- public:
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    virtual void LockScreen(ScreenLockLibrary* obj) = 0;
-    virtual void UnlockScreen(ScreenLockLibrary* obj) = 0;
-    virtual void UnlockScreenFailed(ScreenLockLibrary* obj) = 0;
-  };
-
-  virtual ~ScreenLockLibrary() {}
-
-  virtual void Init() = 0;
-
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-
-  // Notifies PowerManager that a user requested to lock the screen.
-  virtual void NotifyScreenLockRequested() = 0;
-
-  // Notifies PowerManager that screen lock has been completed.
-  virtual void NotifyScreenLockCompleted() = 0;
-
-  // Notifies PowerManager that a user unlocked the screen.
-  virtual void NotifyScreenUnlockRequested() = 0;
-
-  // Notifies PowerManager that screen is unlocked.
-  virtual void NotifyScreenUnlockCompleted() = 0;
-
-  // Factory function, creates a new instance and returns ownership.
-  // For normal usage, access the singleton via CrosLibrary::Get().
-  static ScreenLockLibrary* GetImpl(bool stub);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_CROS_SCREEN_LOCK_LIBRARY_H_