Index: ios/chrome/browser/ui/contextual_search/contextual_search_web_state_observer.mm |
diff --git a/ios/chrome/browser/ui/contextual_search/contextual_search_web_state_observer.mm b/ios/chrome/browser/ui/contextual_search/contextual_search_web_state_observer.mm |
index 6b4595d62ee47686bf31a2a30092da6e4e5ac8e0..ad23ed5b941b416b17fb7a39d7a1b808fcebe4e4 100644 |
--- a/ios/chrome/browser/ui/contextual_search/contextual_search_web_state_observer.mm |
+++ b/ios/chrome/browser/ui/contextual_search/contextual_search_web_state_observer.mm |
@@ -4,6 +4,10 @@ |
#include "ios/chrome/browser/ui/contextual_search/contextual_search_web_state_observer.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
ContextualSearchWebStateObserver::ContextualSearchWebStateObserver( |
id<ContextualSearchWebStateDelegate> delegate) |
: web::WebStateObserver(), delegate_(delegate), loaded_(false) {} |