Added quick lock mechanism while in Touchview

chrome/browser/chromeos/power/power_button_observer.cc

 // 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.
 
 #include "chrome/browser/chromeos/power/power_button_observer.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/user/login_status.h"
 #include "ash/wm/power_button_controller.h"
 #include "base/logging.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
 #include "chrome/browser/chromeos/power/session_state_controller_delegate_chromeos.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "content/public/browser/notification_service.h"
 
+namespace ash {
+class LockStateControllerDelegate;
+}
+
 namespace chromeos {
 
 namespace {
 
 ash::user::LoginStatus GetCurrentLoginStatus() {
   if (!ash::Shell::GetInstance()->system_tray_delegate())
     return ash::user::LOGGED_IN_NONE;
   return ash::Shell::GetInstance()->system_tray_delegate()->
       GetUserLoginStatus();
 }
 
 }  // namespace
 
 PowerButtonObserver::PowerButtonObserver() {
   ash::Shell::GetInstance()->lock_state_controller()->
-      SetDelegate(new SessionStateControllerDelegateChromeos);
+      SetDelegate(scoped_ptr<ash::LockStateControllerDelegate>(
+          new SessionStateControllerDelegateChromeos));
 
   registrar_.Add(
       this,
       chrome::NOTIFICATION_LOGIN_USER_CHANGED,
       content::NotificationService::AllSources());
   registrar_.Add(
       this,
       chrome::NOTIFICATION_APP_TERMINATING,
       content::NotificationService::AllSources());
   registrar_.Add(
@@ skipping 38 matching lines @@
   }
 }
 
 void PowerButtonObserver::PowerButtonEventReceived(
     bool down, const base::TimeTicks& timestamp) {
   ash::Shell::GetInstance()->power_button_controller()->
       OnPowerButtonEvent(down, timestamp);
 }
 
 }  // namespace chromeos