Index: ios/web/webui/url_data_manager_ios_backend.mm |
diff --git a/ios/web/webui/url_data_manager_ios_backend.mm b/ios/web/webui/url_data_manager_ios_backend.mm |
index 5ee98be9fc2e21cd8d8ae878089ea0193d7393ce..4ffc05dc5db32dad4f4992f18b5439577b61bcb7 100644 |
--- a/ios/web/webui/url_data_manager_ios_backend.mm |
+++ b/ios/web/webui/url_data_manager_ios_backend.mm |
@@ -35,6 +35,10 @@ |
#include "net/url_request/url_request_job_factory.h" |
#include "url/url_util.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
using web::WebThread; |
namespace web { |