Index: ios/web/webui/web_ui_ios_impl.mm |
diff --git a/ios/web/webui/web_ui_ios_impl.mm b/ios/web/webui/web_ui_ios_impl.mm |
index 619b2e62d67636b77c13e467705bdb46385feda9..9123ed38008c468a06b5eebefa551f2dcbfa7cf2 100644 |
--- a/ios/web/webui/web_ui_ios_impl.mm |
+++ b/ios/web/webui/web_ui_ios_impl.mm |
@@ -15,6 +15,10 @@ |
#include "ios/web/public/webui/web_ui_ios_message_handler.h" |
#include "ios/web/web_state/web_state_impl.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
using web::WebUIIOSController; |
namespace web { |