Index: ios/web/web_state/web_controller_observer_bridge.mm |
diff --git a/ios/web/web_state/web_controller_observer_bridge.mm b/ios/web/web_state/web_controller_observer_bridge.mm |
index 6fcf90018e61770d2c1dd285cc7ffa32662e4dbd..fd1dd2f95e30befa571e62a73514da0e7f4739e1 100644 |
--- a/ios/web/web_state/web_controller_observer_bridge.mm |
+++ b/ios/web/web_state/web_controller_observer_bridge.mm |
@@ -7,6 +7,10 @@ |
#include "base/logging.h" |
#import "ios/web/public/web_state/crw_web_controller_observer.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace web { |
WebControllerObserverBridge::WebControllerObserverBridge( |