Remove balloon notification code. The last user was the Linux GTK port but that's deleted now.

chrome/browser/notifications/message_center_notification_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_NOTIFICATIONS_MESSAGE_CENTER_NOTIFICATION_MANAGER_H_
 #define CHROME_BROWSER_NOTIFICATIONS_MESSAGE_CENTER_NOTIFICATION_MANAGER_H_
 
 #include <map>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_member.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/notifications/message_center_stats_collector.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_system_observer.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/message_center_observer.h"
 #include "ui/message_center/message_center_tray_delegate.h"
 #include "ui/message_center/message_center_types.h"
 
 class MessageCenterSettingsController;
 class Notification;
+class PrefRegistrySimple;
 class PrefService;
 class Profile;
 
 namespace message_center {
 class NotificationBlocker;
 FORWARD_DECLARE_TEST(WebNotificationTrayTest, ManuallyCloseMessageCenter);
 }
 
 // This class extends NotificationUIManagerImpl and delegates actual display
 // of notifications to MessageCenter, doing necessary conversions.
 class MessageCenterNotificationManager
     : public NotificationUIManager,
       public message_center::MessageCenterObserver,
       public content::NotificationObserver {
  public:
   MessageCenterNotificationManager(
       message_center::MessageCenter* message_center,
       PrefService* local_state,
       scoped_ptr<message_center::NotifierSettingsProvider> settings_provider);
   virtual ~MessageCenterNotificationManager();
 
+  // Registers preferences.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
   // NotificationUIManager
   virtual void Add(const Notification& notification,
                    Profile* profile) OVERRIDE;
   virtual bool Update(const Notification& notification,
                       Profile* profile) OVERRIDE;
   virtual const Notification* FindById(
       const std::string& notification_id) const OVERRIDE;
   virtual bool CancelById(const std::string& notification_id) OVERRIDE;
   virtual std::set<std::string> GetAllIdsByProfileAndSourceOrigin(
       Profile* profile,
@@ skipping 172 matching lines @@
 
   NotificationSystemObserver system_observer_;
 
   // Keeps track of all notification statistics for UMA purposes.
   MessageCenterStatsCollector stats_collector_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterNotificationManager);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_MESSAGE_CENTER_NOTIFICATION_MANAGER_H_