Index: ios/chrome/browser/sessions/ios_chrome_session_tab_helper.mm |
diff --git a/ios/chrome/browser/sessions/ios_chrome_session_tab_helper.mm b/ios/chrome/browser/sessions/ios_chrome_session_tab_helper.mm |
index 76c3fb06640303fd7d3c8f3c6891ae114f0389da..ee5ddd55f67dbdf4ed6f31df2962f3d534d50865 100644 |
--- a/ios/chrome/browser/sessions/ios_chrome_session_tab_helper.mm |
+++ b/ios/chrome/browser/sessions/ios_chrome_session_tab_helper.mm |
@@ -4,6 +4,10 @@ |
#include "ios/chrome/browser/sessions/ios_chrome_session_tab_helper.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
DEFINE_WEB_STATE_USER_DATA_KEY(IOSChromeSessionTabHelper); |
IOSChromeSessionTabHelper::IOSChromeSessionTabHelper(web::WebState* web_state) { |