Index: ios/chrome/browser/callback_counter.mm |
diff --git a/ios/chrome/browser/callback_counter.mm b/ios/chrome/browser/callback_counter.mm |
index ffe4642a4a74c757ee034b591249d46afba7b1a6..73b1aa26ad3775aad73c3cdff725a820d56f8c47 100644 |
--- a/ios/chrome/browser/callback_counter.mm |
+++ b/ios/chrome/browser/callback_counter.mm |
@@ -4,6 +4,10 @@ |
#include "ios/chrome/browser/callback_counter.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
CallbackCounter::CallbackCounter(const FinalCallback& final_callback) |
: callback_count_(0U), final_callback_(final_callback) { |
DCHECK(!final_callback.is_null()); |