Index: ios/chrome/browser/ui/bookmarks/undo_manager_bridge_observer.mm |
diff --git a/ios/chrome/browser/ui/bookmarks/undo_manager_bridge_observer.mm b/ios/chrome/browser/ui/bookmarks/undo_manager_bridge_observer.mm |
index 00e63701e4eefc1638d61bde454cfb2f46eb912c..08c7898a085eb8856f2e83df355ee36450983809 100644 |
--- a/ios/chrome/browser/ui/bookmarks/undo_manager_bridge_observer.mm |
+++ b/ios/chrome/browser/ui/bookmarks/undo_manager_bridge_observer.mm |
@@ -6,6 +6,10 @@ |
#include "base/logging.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace bookmarks { |
UndoManagerBridge::UndoManagerBridge(id<UndoManagerBridgeObserver> observer) |
: observer_(observer) { |