Index: ios/chrome/browser/signin/constants.mm |
diff --git a/ios/chrome/browser/signin/constants.mm b/ios/chrome/browser/signin/constants.mm |
index 220bc3d9579996650bb4a1be44bb77522003de13..431a985fffa6bac0e6e4a168fed3170cdca40f68 100644 |
--- a/ios/chrome/browser/signin/constants.mm |
+++ b/ios/chrome/browser/signin/constants.mm |
@@ -4,6 +4,10 @@ |
#include "ios/chrome/browser/signin/constants.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
NSString* kAuthenticationErrorDomain = @"ChromeSigninError"; |
NSString* kGoogleServiceAuthErrorState = @"GoogleServiceAuthErrorState"; |