| Index: ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.mm | 
| diff --git a/ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.mm b/ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.mm | 
| index 84f621b791e7cba6e36b9bd06fa6f973acd857e9..e7b074d7653cf39e34e5e096ebf64f27cf294af8 100644 | 
| --- a/ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.mm | 
| +++ b/ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.mm | 
| @@ -23,6 +23,10 @@ | 
| #include "ios/web/public/web_state/web_state.h" | 
| #include "url/gurl.h" | 
|  | 
| +#if !defined(__has_feature) || !__has_feature(objc_arc) | 
| +#error "This file requires ARC support." | 
| +#endif | 
| + | 
| ChromeOmniboxClientIOS::ChromeOmniboxClientIOS( | 
| WebOmniboxEditController* controller, | 
| ios::ChromeBrowserState* browser_state) | 
|  |