| Index: ash/frame/caption_buttons/caption_button_types.h | 
| diff --git a/ash/frame/caption_buttons/caption_button_types.h b/ash/frame/caption_buttons/caption_button_types.h | 
| index 7cf625aa18fb4d4f2d97ac6a8d44d3719465b838..fb8b1395a87503a2ace3a3779c53f1475f8e6f39 100644 | 
| --- a/ash/frame/caption_buttons/caption_button_types.h | 
| +++ b/ash/frame/caption_buttons/caption_button_types.h | 
| @@ -15,6 +15,7 @@ enum CaptionButtonIcon { | 
| CAPTION_BUTTON_ICON_CLOSE, | 
| CAPTION_BUTTON_ICON_LEFT_SNAPPED, | 
| CAPTION_BUTTON_ICON_RIGHT_SNAPPED, | 
| +  CAPTION_BUTTON_ICON_BACK, | 
| CAPTION_BUTTON_ICON_COUNT | 
| }; | 
|  | 
|  |