| Index: cc/input/scrollbar_animation_controller_thinning_unittest.cc | 
| diff --git a/cc/input/scrollbar_animation_controller_thinning_unittest.cc b/cc/input/scrollbar_animation_controller_thinning_unittest.cc | 
| index de54ff983920b600c3c98a472ad364d9b2f2618b..ad87b28382e675246977f56cf65ebe5b601422fc 100644 | 
| --- a/cc/input/scrollbar_animation_controller_thinning_unittest.cc | 
| +++ b/cc/input/scrollbar_animation_controller_thinning_unittest.cc | 
| @@ -44,6 +44,7 @@ class ScrollbarAnimationControllerThinningTest | 
| ScrollbarSet ScrollbarsFor(int scroll_layer_id) const override { | 
| return host_impl_.ScrollbarsFor(scroll_layer_id); | 
| } | 
| +  void SetScrollbarsHidden(int layer_id, bool hidden) override {} | 
|  | 
| protected: | 
| const base::TimeDelta kDelayBeforeStarting = base::TimeDelta::FromSeconds(2); | 
|  |