| Index: build/config/ui.gni | 
| diff --git a/build/config/ui.gni b/build/config/ui.gni | 
| index 46154a335e0ade67ec497e74717b7770e696e776..4f4f79cc71b151159fc307fe09a31a22bde6e2e2 100644 | 
| --- a/build/config/ui.gni | 
| +++ b/build/config/ui.gni | 
| @@ -30,6 +30,9 @@ declare_args() { | 
| # True means the UI is built using the "views" framework. | 
| toolkit_views = is_win || is_chromeos || use_aura | 
|  | 
| +  # Whether the entire browser uses toolkit-views on Mac instead of Cocoa. | 
| +  mac_views_browser = false | 
| + | 
| # Whether we should use glib, a low level C utility library. | 
| use_glib = is_linux && !use_ozone | 
| } | 
|  |