| Index: base/prefs/public/pref_change_registrar.h | 
| diff --git a/base/prefs/public/pref_change_registrar.h b/base/prefs/public/pref_change_registrar.h | 
| index a7e1eab4fd5d1a303ce7469a0a6f4a53e5908187..f3abd9869191056aedecb8a731f499c94414f521 100644 | 
| --- a/base/prefs/public/pref_change_registrar.h | 
| +++ b/base/prefs/public/pref_change_registrar.h | 
| @@ -11,12 +11,9 @@ | 
| #include "base/basictypes.h" | 
| #include "base/prefs/base_prefs_export.h" | 
|  | 
| +class PrefObserver; | 
| class PrefServiceBase; | 
|  | 
| -namespace content { | 
| -class NotificationObserver; | 
| -} | 
| - | 
| // Automatically manages the registration of one or more pref change observers | 
| // with a PrefStore. Functions much like NotificationRegistrar, but specifically | 
| // manages observers of preference changes. When the Registrar is destroyed, | 
| @@ -34,13 +31,11 @@ class BASE_PREFS_EXPORT PrefChangeRegistrar { | 
| // object. All registered observers will be automatically unregistered | 
| // when the registrar's destructor is called unless the observer has been | 
| // explicitly removed by a call to Remove beforehand. | 
| -  void Add(const char* path, | 
| -           content::NotificationObserver* obs); | 
| +  void Add(const char* path, PrefObserver* obs); | 
|  | 
| // Removes a preference observer that has previously been added with a call to | 
| // Add. | 
| -  void Remove(const char* path, | 
| -              content::NotificationObserver* obs); | 
| +  void Remove(const char* path, PrefObserver* obs); | 
|  | 
| // Removes all observers that have been previously added with a call to Add. | 
| void RemoveAll(); | 
| @@ -55,8 +50,7 @@ class BASE_PREFS_EXPORT PrefChangeRegistrar { | 
| bool IsManaged(); | 
|  | 
| private: | 
| -  typedef std::pair<std::string, content::NotificationObserver*> | 
| -      ObserverRegistration; | 
| +  typedef std::pair<std::string, PrefObserver*> ObserverRegistration; | 
|  | 
| std::set<ObserverRegistration> observers_; | 
| PrefServiceBase* service_; | 
|  |