Index: ios/chrome/common/app_group/app_group_metrics.mm |
diff --git a/ios/chrome/common/app_group/app_group_metrics.mm b/ios/chrome/common/app_group/app_group_metrics.mm |
index 9bb553178468d82963c94a8d8b7e89e5d465d802..ab973d9468aa7933aa0406d40d1ef9dbf579ed7d 100644 |
--- a/ios/chrome/common/app_group/app_group_metrics.mm |
+++ b/ios/chrome/common/app_group/app_group_metrics.mm |
@@ -6,6 +6,10 @@ |
#include "base/logging.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace app_group { |
NSString* const kPendingLogFileSuffix = @"_PendingLog"; |