Index: ios/chrome/browser/metrics/new_tab_page_uma.mm |
diff --git a/ios/chrome/browser/metrics/new_tab_page_uma.mm b/ios/chrome/browser/metrics/new_tab_page_uma.mm |
index 8405afa190e9ee123388a1c17f02fd58ae0b7163..a11fc2dfc5d3dcb826d6e1e64f98b821bcf526a8 100644 |
--- a/ios/chrome/browser/metrics/new_tab_page_uma.mm |
+++ b/ios/chrome/browser/metrics/new_tab_page_uma.mm |
@@ -13,6 +13,10 @@ |
#import "ios/chrome/browser/tabs/tab_model_list.h" |
#include "url/gurl.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace new_tab_page_uma { |
bool IsCurrentlyOnNTP(ios::ChromeBrowserState* browserState) { |