| Index: ios/chrome/browser/ui/bookmarks/bookmark_utils_ios_unittest.mm
 | 
| diff --git a/ios/chrome/browser/ui/bookmarks/bookmark_utils_ios_unittest.mm b/ios/chrome/browser/ui/bookmarks/bookmark_utils_ios_unittest.mm
 | 
| index d9ec4ef5f88a1dddfd7763591360a72e6b23966b..7edfa44cb4c3c9a4ad5c2bb32ce5ff69269efde7 100644
 | 
| --- a/ios/chrome/browser/ui/bookmarks/bookmark_utils_ios_unittest.mm
 | 
| +++ b/ios/chrome/browser/ui/bookmarks/bookmark_utils_ios_unittest.mm
 | 
| @@ -15,6 +15,10 @@
 | 
|  #import "ios/chrome/browser/ui/bookmarks/bookmark_utils_ios.h"
 | 
|  #include "testing/gtest_mac.h"
 | 
|  
 | 
| +#if !defined(__has_feature) || !__has_feature(objc_arc)
 | 
| +#error "This file requires ARC support."
 | 
| +#endif
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| +
 | 
|  using bookmarks::BookmarkNode;
 | 
|  
 | 
|  namespace {
 | 
| 
 |