Index: ios/shared/chrome/browser/tabs/web_state_list_unittest.mm |
diff --git a/ios/shared/chrome/browser/tabs/web_state_list_unittest.mm b/ios/shared/chrome/browser/tabs/web_state_list_unittest.mm |
index b1e567d8a764ff78c37b717b6b7a7d2bc374a5a0..54674290dceca845f49b6d73b43a1db21aa4337d 100644 |
--- a/ios/shared/chrome/browser/tabs/web_state_list_unittest.mm |
+++ b/ios/shared/chrome/browser/tabs/web_state_list_unittest.mm |
@@ -13,6 +13,10 @@ |
#include "testing/gtest/include/gtest/gtest.h" |
#include "testing/platform_test.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace { |
const char kURL0[] = "https://chromium.org/0"; |
const char kURL1[] = "https://chromium.org/1"; |