Enable WebUI ScreenLocker for aura by abstracting lock window.

chrome/browser/chromeos/login/screen_locker.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_LOGIN_SCREEN_LOCKER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_LOCKER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 16 matching lines @@
 
 // ScreenLocker creates a ScreenLockerDelegate which will display the lock UI.
 // As well, it takes care of authenticating the user and managing a global
 // instance of itself which will be deleted when the system is unlocked.
 class ScreenLocker : public LoginStatusConsumer {
  public:
   explicit ScreenLocker(const User& user);
 
   // Returns the default instance if it has been created.
   static ScreenLocker* default_screen_locker() {
-#if defined(TOOLKIT_USES_GTK)
     return screen_locker_;
-#else
-    NOTIMPLEMENTED();
-    return NULL;
-#endif
   }
 
   // Initialize and show the screen locker.
   void Init();
 
   // LoginStatusConsumer implements:
   virtual void OnLoginFailure(const chromeos::LoginFailure& error) OVERRIDE;
   virtual void OnLoginSuccess(const std::string& username,
                               const std::string& password,
                               const GaiaAuthConsumer::ClientLoginResult& result,
@@ skipping 65 matching lines @@
 
   // Called when the screen lock is ready.
   void ScreenLockReady();
 
   // ScreenLockerDelegate instance in use.
   scoped_ptr<ScreenLockerDelegate> delegate_;
 
   // Logged in user.
   const User& user_;
 
-#if defined(TOOLKIT_USES_GTK)
   // Used to authenticate the user to unlock.
   scoped_refptr<Authenticator> authenticator_;
-#endif
 
   // Unlock the screen when it detects key/mouse event without asking
   // password. True when chrome is in BWSI or auto login mode.
   bool unlock_on_input_;
 
   // True if the screen is locked, or false otherwise.  This changes
   // from false to true, but will never change from true to
   // false. Instead, ScreenLocker object gets deleted when unlocked.
   bool locked_;
 
   // Reference to the single instance of the screen locker object.
   // This is used to make sure there is only one screen locker instance.
   static ScreenLocker* screen_locker_;
 
   // The time when the screen locker object is created.
   base::Time start_time_;
   // The time when the authentication is started.
   base::Time authentication_start_time_;
 
   // Delegate to forward all login status events to.
   // Tests can use this to receive login status events.
   LoginStatusConsumer* login_status_consumer_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenLocker);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_LOCKER_H_