Index: ios/chrome/browser/signin/authentication_service_factory.mm |
diff --git a/ios/chrome/browser/signin/authentication_service_factory.mm b/ios/chrome/browser/signin/authentication_service_factory.mm |
index 8910744f5ddad07a5721f43c6886e268820d3401..f0bc6fda848d58c119b0dece1d4c187c084b334c 100644 |
--- a/ios/chrome/browser/signin/authentication_service_factory.mm |
+++ b/ios/chrome/browser/signin/authentication_service_factory.mm |
@@ -16,6 +16,10 @@ |
#include "ios/chrome/browser/signin/signin_manager_factory.h" |
#include "ios/chrome/browser/sync/sync_setup_service_factory.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
// static |
AuthenticationService* AuthenticationServiceFactory::GetForBrowserState( |
ios::ChromeBrowserState* browser_state) { |