| Index: ios/chrome/browser/ui/omnibox/BUILD.gn | 
| diff --git a/ios/chrome/browser/ui/omnibox/BUILD.gn b/ios/chrome/browser/ui/omnibox/BUILD.gn | 
| index be8cfbb59e1ce547672a95fb74c444b8e4d02259..6202e36a2340ee7fc7d884e784649535fd5aa79e 100644 | 
| --- a/ios/chrome/browser/ui/omnibox/BUILD.gn | 
| +++ b/ios/chrome/browser/ui/omnibox/BUILD.gn | 
| @@ -32,6 +32,7 @@ bundle_data("resources") { | 
| } | 
|  | 
| source_set("omnibox_internal") { | 
| +  configs += [ "//build/config/compiler:enable_arc" ] | 
| sources = [ | 
| "chrome_omnibox_client_ios.h", | 
| "chrome_omnibox_client_ios.mm", | 
|  |