Adding momentum/overscroll to views:: ScrollViews

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index f295efcfaca6ea2c8cdaf8b5fbe7946151a5bcca..d2dfe1d4dbfaa7c2b3073d8e1ced65ed0916257e 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -1086,7 +1086,8 @@ void LayerTreeHost::ApplyViewportDeltas(ScrollAndScaleSet* info) {
     inner_viewport_scroll_layer_->SetScrollOffsetFromImplSide(
         gfx::ScrollOffsetWithDelta(
             inner_viewport_scroll_layer_->scroll_offset(),
-            inner_viewport_scroll_delta));
+            inner_viewport_scroll_delta),
+        nullptr);
   }
 
   ApplyPageScaleDeltaFromImplSide(info->page_scale_delta);
@@ -1115,8 +1116,11 @@ void LayerTreeHost::ApplyScrollAndScale(ScrollAndScaleSet* info) {
       Layer* layer = LayerById(info->scrolls[i].layer_id);
       if (!layer)
         continue;
-      layer->SetScrollOffsetFromImplSide(gfx::ScrollOffsetWithDelta(
-          layer->scroll_offset(), info->scrolls[i].scroll_delta));
+
+      layer->SetScrollOffsetFromImplSide(
+          gfx::ScrollOffsetWithDelta(layer->scroll_offset(),
+                                     info->scrolls[i].scroll_delta),
+          &info->elastic_overscroll_delta);
       SetNeedsUpdateLayers();
     }
   }