| Index: cc/input/scroll_boundary_behavior.h | 
| diff --git a/cc/input/scroll_boundary_behavior.h b/cc/input/scroll_boundary_behavior.h | 
| index 878a5a469358e10261e3468a4b6ee2571b20feac..94a958bb6a7a413cbe0b51043606fcbe27d5cfd6 100644 | 
| --- a/cc/input/scroll_boundary_behavior.h | 
| +++ b/cc/input/scroll_boundary_behavior.h | 
| @@ -18,7 +18,8 @@ struct CC_EXPORT ScrollBoundaryBehavior { | 
| kScrollBoundaryBehaviorTypeAuto, | 
| // Hint to disable scroll chaining. The user agent may show an appropriate | 
| // overscroll affordance. | 
| -    kScrollBoundaryBehaviorTypeContain | 
| +    kScrollBoundaryBehaviorTypeContain, | 
| +    kScrollBoundaryBehaviorTypeMax = kScrollBoundaryBehaviorTypeContain | 
| }; | 
|  | 
| ScrollBoundaryBehavior() | 
|  |