| Index: cc/trees/layer_tree_host.h | 
| diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h | 
| index f63d45889971e8f721a8269545eecb64cf4eba03..61839e679547a45ae80c342ba9c6f4f5216b24ce 100644 | 
| --- a/cc/trees/layer_tree_host.h | 
| +++ b/cc/trees/layer_tree_host.h | 
| @@ -60,6 +60,7 @@ class MutatorEvents; | 
| class MutatorHost; | 
| struct PendingPageScaleAnimation; | 
| class RenderingStatsInstrumentation; | 
| +struct ScrollBoundaryBehavior; | 
| class TaskGraphRunner; | 
| class UIResourceManager; | 
| struct RenderingStats; | 
| @@ -293,6 +294,8 @@ class CC_EXPORT LayerTreeHost : public viz::SurfaceReferenceOwner, | 
| float bottom_height, | 
| bool shrink); | 
| void SetBrowserControlsShownRatio(float ratio); | 
| +  void SetScrollBoundaryBehavior( | 
| +      const ScrollBoundaryBehavior& scroll_boundary_behavior); | 
|  | 
| void SetPageScaleFactorAndLimits(float page_scale_factor, | 
| float min_page_scale_factor, | 
| @@ -606,6 +609,7 @@ class CC_EXPORT LayerTreeHost : public viz::SurfaceReferenceOwner, | 
| float top_controls_height_ = 0.f; | 
| float top_controls_shown_ratio_ = 0.f; | 
| bool browser_controls_shrink_blink_size_ = false; | 
| +  ScrollBoundaryBehavior scroll_boundary_behavior_; | 
|  | 
| float bottom_controls_height_ = 0.f; | 
|  | 
|  |