Add ScopedKeepAlive to c/b/lifetime

chrome/browser/background/background_mode_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_BACKGROUND_BACKGROUND_MODE_MANAGER_H_
 #define CHROME_BROWSER_BACKGROUND_BACKGROUND_MODE_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/background/background_application_list_model.h"
+#include "chrome/browser/lifetime/scoped_keep_alive.h"
 #include "chrome/browser/profiles/profile_attributes_storage.h"
 #include "chrome/browser/status_icons/status_icon.h"
 #include "chrome/browser/status_icons/status_icon_menu_model.h"
 #include "chrome/browser/ui/browser_list_observer.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "extensions/common/extension.h"
 
@@ skipping 282 matching lines @@
   void StartBackgroundMode();
 
   // Invoked to take Chrome out of KeepAlive mode - chrome stops running in
   // the background and removes its status bar icon.
   void EndBackgroundMode();
 
   // Enables keep alive and the status tray icon if and only if background mode
   // is active and not suspended.
   virtual void UpdateKeepAliveAndTrayIcon();
 
+  // Release keep_alive_for_startup_. This is invoked as a callback to make
+  // make sure the message queue was initialized before we attempt to exit.
+  void ReleaseStartupKeepAliveCallback();
+
   // If --no-startup-window is passed, BackgroundModeManager will manually keep
   // chrome running while waiting for apps to load. This is called when we no
   // longer need to do this (either because the user has chosen to exit chrome
   // manually, or all apps have been loaded).
-  void DecrementKeepAliveCountForStartup();
+  void ReleaseStartupKeepAlive();
 
   // Return an appropriate name for a Preferences menu entry.  Preferences is
   // sometimes called Options or Settings.
   base::string16 GetPreferencesMenuLabel();
 
   // Create a status tray icon to allow the user to shutdown Chrome when running
   // in background mode. Virtual to enable testing.
   virtual void CreateStatusTrayIcon();
 
   // Removes the status tray icon because we are exiting background mode.
@@ skipping 71 matching lines @@
 
   // Reference to our status icon's context menu (if any) - owned by the
   // status_icon_.
   StatusIconMenuModel* context_menu_;
 
   // Set to true when we are running in background mode. Allows us to track our
   // current background state so we can take the appropriate action when the
   // user disables/enables background mode via preferences.
   bool in_background_mode_;
 
+  // Background mode does not always keep Chrome alive. When it does, it is
+  // using this scoped object.
+  scoped_ptr<ScopedKeepAlive> keep_alive_;
+
   // Set when we are keeping chrome running during the startup process - this
   // is required when running with the --no-startup-window flag, as otherwise
   // chrome would immediately exit due to having no open windows.
-  bool keep_alive_for_startup_;
+  scoped_ptr<ScopedKeepAlive> keep_alive_for_startup_;
 
   // Set to true when Chrome is running with the --keep-alive-for-test flag
   // (used for testing background mode without having to install a background
   // app).
   bool keep_alive_for_test_;
 
   // Set to true when background mode is suspended.
   bool background_mode_suspended_;
 
-  // Set to true when background mode is keeping Chrome alive.
-  bool keeping_alive_;
-
   base::WeakPtrFactory<BackgroundModeManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundModeManager);
 };
 
 #endif  // CHROME_BROWSER_BACKGROUND_BACKGROUND_MODE_MANAGER_H_