Index: ios/web/webui/mojo_facade.mm |
diff --git a/ios/web/webui/mojo_facade.mm b/ios/web/webui/mojo_facade.mm |
index 2d35a884a9e2fc6a1bef2557bafc495b06b4a199..dc8eb24cb4fe9c294f33df6701bca29847cfeba4 100644 |
--- a/ios/web/webui/mojo_facade.mm |
+++ b/ios/web/webui/mojo_facade.mm |
@@ -17,6 +17,10 @@ |
#include "mojo/public/cpp/system/core.h" |
#include "services/shell/public/interfaces/interface_provider.mojom.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace web { |
namespace { |