Index: ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.mm |
diff --git a/ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.mm b/ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.mm |
index 63d2a1be2d04f6870ee3b9517bce2c550a3d4c47..006dcae7fb13173a0f0cbd833d39f45fa876c643 100644 |
--- a/ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.mm |
+++ b/ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.mm |
@@ -4,5 +4,9 @@ |
#import "ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
const int kNewTabPageShadowHeight = 2; |
const int kNewTabPageDistanceToFadeShadow = 20; |