Pinch/Zoom Infrastructure & Plumbing CL

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 3f8f3a9b673ae970910006855cbad355aec38690..3a5c3d8ddc7d54e68ee83b293ff1d85ac31b19f3 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -276,7 +276,8 @@ class CC_EXPORT LayerTreeHostImpl
 
   // Shortcuts to layers on the active tree.
   LayerImpl* RootLayer() const;
-  LayerImpl* RootScrollLayer() const;
+  LayerImpl* InnerViewportScrollLayer() const;
+  LayerImpl* OuterViewportScrollLayer() const;
   LayerImpl* CurrentlyScrollingLayer() const;
 
   int scroll_layer_id_when_mouse_over_scrollbar() {
@@ -473,7 +474,6 @@ class CC_EXPORT LayerTreeHostImpl
       gfx::PointF viewport_point,
       gfx::Vector2dF viewport_delta);
 
-  void UpdateMaxScrollOffset();
   void TrackDamageForAllSurfaces(
       LayerImpl* root_draw_layer,
       const LayerImplList& render_surface_layer_list);