| Index: ios/chrome/browser/signin/oauth2_token_service_factory.h | 
| diff --git a/ios/chrome/browser/signin/oauth2_token_service_factory.h b/ios/chrome/browser/signin/oauth2_token_service_factory.h | 
| index 7f456dc76cf1ca9e1b8aacf9ab28263d8f1b4656..1f757aa508ffcfb1f115c41e69994a9ff3e54b14 100644 | 
| --- a/ios/chrome/browser/signin/oauth2_token_service_factory.h | 
| +++ b/ios/chrome/browser/signin/oauth2_token_service_factory.h | 
| @@ -13,8 +13,11 @@ namespace ios { | 
| class ChromeBrowserState; | 
| } | 
|  | 
| +namespace base { | 
| template <typename T> | 
| struct DefaultSingletonTraits; | 
| +}  // namespace base | 
| + | 
| class ProfileOAuth2TokenService; | 
|  | 
| // Singleton that owns all ProfileOAuth2TokenServices and associates them with | 
| @@ -32,7 +35,7 @@ class OAuth2TokenServiceFactory : public BrowserStateKeyedServiceFactory { | 
| static OAuth2TokenServiceFactory* GetInstance(); | 
|  | 
| private: | 
| -  friend struct DefaultSingletonTraits<OAuth2TokenServiceFactory>; | 
| +  friend struct base::DefaultSingletonTraits<OAuth2TokenServiceFactory>; | 
|  | 
| OAuth2TokenServiceFactory(); | 
| ~OAuth2TokenServiceFactory() override; | 
|  |