Index: ios/web/webui/web_ui_ios_data_source_impl.mm |
diff --git a/ios/web/webui/web_ui_ios_data_source_impl.mm b/ios/web/webui/web_ui_ios_data_source_impl.mm |
index 1f44034b5301af8eab61de140079a9fc4ea4132d..efb9e793b3fc9887ea2341903a39bb969a423ee4 100644 |
--- a/ios/web/webui/web_ui_ios_data_source_impl.mm |
+++ b/ios/web/webui/web_ui_ios_data_source_impl.mm |
@@ -13,6 +13,10 @@ |
#include "ui/base/webui/jstemplate_builder.h" |
#include "ui/base/webui/web_ui_util.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace web { |
// static |