Index: ios/chrome/browser/prefs/pref_observer_bridge.mm |
diff --git a/ios/chrome/browser/prefs/pref_observer_bridge.mm b/ios/chrome/browser/prefs/pref_observer_bridge.mm |
index 4ba85bb15ddb835f3d4633f2c42b6fdab49f28c8..61083eb6755b5c8e67b9b66d8a10e573bd303dce 100644 |
--- a/ios/chrome/browser/prefs/pref_observer_bridge.mm |
+++ b/ios/chrome/browser/prefs/pref_observer_bridge.mm |
@@ -7,6 +7,10 @@ |
#include "base/bind.h" |
#include "components/prefs/pref_change_registrar.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
PrefObserverBridge::PrefObserverBridge(id<PrefObserverDelegate> delegate) |
: delegate_(delegate) { |
} |