Observe chrome::NOTIFICATION_APP_TERMINATING in Chrome's AppListViewDelegate

chrome/browser/ui/app_list/app_list_view_delegate.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_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/profiles/profile_info_cache_observer.h"
 #include "chrome/browser/search/hotword_client.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/app_list/start_page_observer.h"
 #include "components/signin/core/browser/signin_manager_base.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
 #include "ui/app_list/app_list_view_delegate.h"
 
 class AppListControllerDelegate;
 class Profile;
 
 namespace apps {
 class CustomLauncherPageContents;
 }
 
 namespace app_list {
@@ skipping 11 matching lines @@
 
 #if defined(USE_ASH)
 class AppSyncUIStateWatcher;
 #endif
 
 class AppListViewDelegate : public app_list::AppListViewDelegate,
                             public app_list::StartPageObserver,
                             public HotwordClient,
                             public ProfileInfoCacheObserver,
                             public SigninManagerBase::Observer,
-                            public SigninManagerFactory::Observer {
+                            public SigninManagerFactory::Observer,
+                            public content::NotificationObserver {
  public:
   // Constructs Chrome's AppListViewDelegate, initially for |profile|.
   // Does not take ownership of |controller|. TODO(tapted): It should.
   AppListViewDelegate(Profile* profile,
                       AppListControllerDelegate* controller);
   virtual ~AppListViewDelegate();
 
  private:
   // Configure the AppList for the given |profile|.
   void SetProfile(Profile* profile);
@@ skipping 72 matching lines @@
                                const std::string& username) OVERRIDE;
 
   // Overridden from ProfileInfoCacheObserver:
   virtual void OnProfileAdded(const base::FilePath& profile_path) OVERRIDE;
   virtual void OnProfileWasRemoved(const base::FilePath& profile_path,
                                    const base::string16& profile_name) OVERRIDE;
   virtual void OnProfileNameChanged(
       const base::FilePath& profile_path,
       const base::string16& old_profile_name) OVERRIDE;
 
+  // Overridden from content::NotificationObserver:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
   // Unowned pointer to the controller.
   AppListControllerDelegate* controller_;
   // Unowned pointer to the associated profile. May change if SetProfileByPath
   // is called.
   Profile* profile_;
   // Unowned pointer to the model owned by AppListSyncableService. Will change
   // if |profile_| changes.
   app_list::AppListModel* model_;
 
   // Note: order ensures |search_controller_| is destroyed before |speech_ui_|.
@@ skipping 10 matching lines @@
 
   ObserverList<app_list::AppListViewDelegateObserver> observers_;
 
   // Used to track the SigninManagers that this instance is observing so that
   // this instance can be removed as an observer on its destruction.
   ScopedObserver<SigninManagerBase, AppListViewDelegate> scoped_observer_;
 
   // Window contents of additional custom launcher pages.
   ScopedVector<apps::CustomLauncherPageContents> custom_page_contents_;
 
+  // Registers for NOTIFICATION_APP_TERMINATING to unload custom launcher pages.
+  content::NotificationRegistrar registrar_;
+
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_