| Index: chrome/browser/chromeos/extensions/file_browser_event_router.h | 
| diff --git a/chrome/browser/chromeos/extensions/file_browser_event_router.h b/chrome/browser/chromeos/extensions/file_browser_event_router.h | 
| index 031343444a8541a50d4f45e477a99db690b92f2e..e2d926b6dafec0678ca7320b4eb9215f81a31f5e 100644 | 
| --- a/chrome/browser/chromeos/extensions/file_browser_event_router.h | 
| +++ b/chrome/browser/chromeos/extensions/file_browser_event_router.h | 
| @@ -12,6 +12,7 @@ | 
| #include "base/files/file_path_watcher.h" | 
| #include "base/memory/linked_ptr.h" | 
| #include "base/memory/scoped_ptr.h" | 
| +#include "base/prefs/public/pref_observer.h" | 
| #include "base/string16.h" | 
| #include "base/synchronization/lock.h" | 
| #include "chrome/browser/chromeos/cros/network_library.h" | 
| @@ -22,9 +23,6 @@ | 
| #include "chrome/browser/profiles/refcounted_profile_keyed_service.h" | 
| #include "chrome/browser/profiles/refcounted_profile_keyed_service_factory.h" | 
| #include "chromeos/disks/disk_mount_manager.h" | 
| -#include "content/public/browser/notification_details.h" | 
| -#include "content/public/browser/notification_observer.h" | 
| -#include "content/public/browser/notification_source.h" | 
|  | 
| class FileBrowserNotifications; | 
| class PrefChangeRegistrar; | 
| @@ -41,7 +39,7 @@ class FileBrowserEventRouter | 
| : public RefcountedProfileKeyedService, | 
| public chromeos::disks::DiskMountManager::Observer, | 
| public chromeos::NetworkLibrary::NetworkManagerObserver, | 
| -      public content::NotificationObserver, | 
| +      public PrefObserver, | 
| public drive::DriveFileSystemObserver, | 
| public google_apis::DriveServiceObserver { | 
| public: | 
| @@ -79,10 +77,9 @@ class FileBrowserEventRouter | 
| virtual void OnNetworkManagerChanged( | 
| chromeos::NetworkLibrary* network_library) OVERRIDE; | 
|  | 
| -  // Overridden from content::NotificationObserver: | 
| -  virtual void Observe(int type, | 
| -                       const content::NotificationSource& source, | 
| -                       const content::NotificationDetails& details) OVERRIDE; | 
| +  // Overridden from PrefObserver. | 
| +  virtual void OnPreferenceChanged(PrefServiceBase* service, | 
| +                                   const std::string& pref_name) OVERRIDE; | 
|  | 
| // drive::DriveServiceObserver overrides. | 
| virtual void OnProgressUpdate( | 
|  |