Index: ios/chrome/browser/suggestions/suggestions_service_factory.mm |
diff --git a/ios/chrome/browser/suggestions/suggestions_service_factory.mm b/ios/chrome/browser/suggestions/suggestions_service_factory.mm |
index 9d1b023f5bcdd062bfa26fcd6b34d76153de6b87..daeca8b0132efabbcb609c2734bd67d042e8e750 100644 |
--- a/ios/chrome/browser/suggestions/suggestions_service_factory.mm |
+++ b/ios/chrome/browser/suggestions/suggestions_service_factory.mm |
@@ -29,6 +29,10 @@ |
#include "ios/web/public/browser_state.h" |
#include "ios/web/public/web_thread.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace suggestions { |
namespace { |
const base::FilePath::CharType kThumbnailDirectory[] = |