chromeos: Remove LoginLibrary code, which is no longer used.

chrome/browser/chromeos/cros/login_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_LOGIN_LIBRARY_H_
-#define CHROME_BROWSER_CHROMEOS_CROS_LOGIN_LIBRARY_H_
-#pragma once
-
-#include <string>
-
-#include "base/memory/singleton.h"
-#include "third_party/cros/chromeos_login.h"
-
-namespace chromeos {
-
-// This interface defines the interaction with the ChromeOS login library APIs.
-class LoginLibrary {
- public:
-  virtual ~LoginLibrary();
-
-  virtual void Init() = 0;
-
-  // Requests that the Upstart signal login-prompt-ready be emitted.
-  virtual void EmitLoginPromptReady() = 0;
-
-  // Requests that the Upstart signal login-prompt-visible be emitted. This is
-  // currently used only with views-desktop or aura environments. In the normal
-  // environment, the chromeos-wm emits the signal.
-  virtual void EmitLoginPromptVisible() = 0;
-
-  virtual void RequestRetrievePolicy(RetrievePolicyCallback callback,
-                                     void* delegate_string) = 0;
-
-  virtual void RequestStorePolicy(const std::string& policy,
-                                  StorePolicyCallback callback,
-                                  void* delegate_bool) = 0;
-
-  // Tells the session manager to start a logged-in session for the user
-  // |user_email|.  |unique_id| is meant to be used when we have a non-human-
-  // readable unique identifier by which we distinguish users (to deal with
-  // potential email address changes over time).
-  virtual void StartSession(const std::string& user_email,
-                            const std::string& unique_id /* unused */) = 0;
-
-  // Tells the session manager to terminate the current logged-in session.
-  // In the event that we ever support multiple simultaneous user sessions,
-  // This will tell the session manager to terminate the session for the user
-  // indicated by |unique_id|.
-  virtual void StopSession(const std::string& unique_id /* unused */) = 0;
-
-  // Restarts the Enterprise Daemon.
-  virtual void RestartEntd() = 0;
-
-  // Restarts the job with specified command line string.
-  virtual void RestartJob(int pid, const std::string& command_line) = 0;
-
-  // Factory function, creates a new instance and returns ownership.
-  // For normal usage, access the singleton via CrosLibrary::Get().
-  static LoginLibrary* GetImpl(bool stub);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_CROS_LOGIN_LIBRARY_H_