Replace Increment/DecrementKeepAliveCount by ScopedKeepAlives

chrome/browser/chromeos/login/ui/login_display_host_impl.h

 // Copyright 2014 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_UI_LOGIN_DISPLAY_HOST_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_HOST_IMPL_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 17 matching lines @@
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/views/widget/widget_removals_observer.h"
 #include "ui/wm/public/scoped_drag_drop_disabler.h"
 
 class PrefService;
+class ScopedKeepAlive;
 
 namespace content {
 class RenderFrameHost;
 class WebContents;
 }
 
 namespace chromeos {
 
 class DemoAppLauncher;
 class FocusRingController;
@@ skipping 163 matching lines @@
   scoped_ptr<WizardController> wizard_controller_;
 
   scoped_ptr<SignInScreenController> signin_screen_controller_;
 
   // App launch controller.
   scoped_ptr<AppLaunchController> app_launch_controller_;
 
   // Demo app launcher.
   scoped_ptr<DemoAppLauncher> demo_app_launcher_;
 
+  // Make sure chrome won't exit while we are at login/oobe screen.
+  scoped_ptr<ScopedKeepAlive> keep_alive_;
+
   // Has ShutdownDisplayHost() already been called?  Used to avoid posting our
   // own deletion to the message loop twice if the user logs out while we're
   // still in the process of cleaning up after login (http://crbug.com/134463).
   bool shutting_down_;
 
   // Whether progress bar is shown on the OOBE page.
   bool oobe_progress_bar_visible_;
 
   // True if session start is in progress.
   bool session_starting_;
@@ skipping 78 matching lines @@
 
   base::WeakPtrFactory<LoginDisplayHostImpl> pointer_factory_;
   base::WeakPtrFactory<LoginDisplayHostImpl> animation_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDisplayHostImpl);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_HOST_IMPL_H_