Index: ios/chrome/browser/physical_web/ios_chrome_physical_web_data_source.mm |
diff --git a/ios/chrome/browser/physical_web/ios_chrome_physical_web_data_source.mm b/ios/chrome/browser/physical_web/ios_chrome_physical_web_data_source.mm |
index 43247b36404c3a96d9bc2559a35f7f2f395e946b..23661936f0fdc32541f03ed5118db3f710a1e0c2 100644 |
--- a/ios/chrome/browser/physical_web/ios_chrome_physical_web_data_source.mm |
+++ b/ios/chrome/browser/physical_web/ios_chrome_physical_web_data_source.mm |
@@ -8,6 +8,10 @@ |
#import "ios/chrome/browser/physical_web/physical_web_initial_state_recorder.h" |
#import "ios/chrome/common/physical_web/physical_web_scanner.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
IOSChromePhysicalWebDataSource::IOSChromePhysicalWebDataSource( |
PrefService* pref_service) { |
initialStateRecorder_.reset([[PhysicalWebInitialStateRecorder alloc] |