Index: ios/web/interstitials/html_web_interstitial_impl.mm |
diff --git a/ios/web/interstitials/html_web_interstitial_impl.mm b/ios/web/interstitials/html_web_interstitial_impl.mm |
index 1443b733b33b1023a426c97c22d83cefda584f23..6b0422fc5fc3e0e119a0a37df0ccef8fc8903f7d 100644 |
--- a/ios/web/interstitials/html_web_interstitial_impl.mm |
+++ b/ios/web/interstitials/html_web_interstitial_impl.mm |
@@ -17,6 +17,10 @@ |
#import "net/base/mac/url_conversions.h" |
#include "ui/gfx/geometry/size.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
// The delegate of the web view that is used to display the HTML content. |
// It intercepts JavaScript-triggered commands and forwards them |
// to the interstitial. |