| Index: chrome/browser/net/pref_proxy_config_tracker_impl.cc | 
| diff --git a/chrome/browser/net/pref_proxy_config_tracker_impl.cc b/chrome/browser/net/pref_proxy_config_tracker_impl.cc | 
| index 9760f02e0e7bf61af796aba0e021b214118b21ab..50398abaaf3fff4691accdd3ea66e57b6612d920 100644 | 
| --- a/chrome/browser/net/pref_proxy_config_tracker_impl.cc | 
| +++ b/chrome/browser/net/pref_proxy_config_tracker_impl.cc | 
| @@ -287,13 +287,11 @@ bool PrefProxyConfigTrackerImpl::PrefConfigToNetConfig( | 
| return false; | 
| } | 
|  | 
| -void PrefProxyConfigTrackerImpl::Observe( | 
| -    int type, | 
| -    const content::NotificationSource& source, | 
| -    const content::NotificationDetails& details) { | 
| +void PrefProxyConfigTrackerImpl::OnPreferenceChanged( | 
| +    PrefServiceBase* service, | 
| +    const std::string& pref_name) { | 
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | 
| -  if (type == chrome::NOTIFICATION_PREF_CHANGED && | 
| -      content::Source<PrefService>(source).ptr() == pref_service_) { | 
| +  if (service == pref_service_) { | 
| net::ProxyConfig new_config; | 
| ProxyPrefs::ConfigState config_state = ReadPrefConfig(&new_config); | 
| if (config_state_ != config_state || | 
| @@ -307,7 +305,7 @@ void PrefProxyConfigTrackerImpl::Observe( | 
| if (update_pending_) | 
| OnProxyConfigChanged(config_state, new_config); | 
| } else { | 
| -    NOTREACHED() << "Unexpected notification of type " << type; | 
| +    NOTREACHED() << "Unexpected PrefService."; | 
| } | 
| } | 
|  | 
|  |