Replace MessageLoop::DeleteSoon implementation with one that uses base::Bind.

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>
 
+#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/task.h"
+#include "base/message_loop_helpers.h"
 #include "base/time.h"
 #include "chrome/browser/chromeos/login/login_status_consumer.h"
 #include "chrome/browser/chromeos/login/screen_locker_delegate.h"
 #include "ui/base/accelerators/accelerator.h"
 
 namespace chromeos {
 
 class Authenticator;
 class LoginFailure;
 class User;
@@ skipping 67 matching lines @@
   // Hide the screen locker.
   static void Hide();
 
   // Notifies that PowerManager rejected UnlockScreen request.
   static void UnlockScreenFailed();
 
   // Returns the tester
   static test::ScreenLockerTester* GetTester();
 
  private:
-  friend class DeleteTask<ScreenLocker>;
+  friend class base::DeleteHelper<ScreenLocker>;
   friend class test::ScreenLockerTester;
   friend class test::ScreenLockerViewsTester;
   friend class test::WebUIScreenLockerTester;
   friend class ScreenLockerDelegate;
 
   virtual ~ScreenLocker();
 
   // Sets the authenticator.
   void SetAuthenticator(Authenticator* authenticator);
 
@@ skipping 30 matching lines @@
   // 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_