| Index: ios/chrome/browser/signin/account_tracker_service_factory.cc | 
| diff --git a/ios/chrome/browser/signin/account_tracker_service_factory.cc b/ios/chrome/browser/signin/account_tracker_service_factory.cc | 
| index befb27834dc2222e3e6a4397e9148ee4bfa3b2f1..df4918a487c314d9004effea5dbd832febd4ffa5 100644 | 
| --- a/ios/chrome/browser/signin/account_tracker_service_factory.cc | 
| +++ b/ios/chrome/browser/signin/account_tracker_service_factory.cc | 
| @@ -30,7 +30,7 @@ AccountTrackerService* AccountTrackerServiceFactory::GetForBrowserState( | 
|  | 
| // static | 
| AccountTrackerServiceFactory* AccountTrackerServiceFactory::GetInstance() { | 
| -  return Singleton<AccountTrackerServiceFactory>::get(); | 
| +  return base::Singleton<AccountTrackerServiceFactory>::get(); | 
| } | 
|  | 
| void AccountTrackerServiceFactory::RegisterBrowserStatePrefs( | 
|  |