cc : Stop pushing layers from hidden subtrees at commit

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index 54dc7bbd336bc73f606cdad27254392eed83b148..8d5bd8e37f2028425b4ac12acceabc12730a81ed 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -1635,6 +1635,11 @@ CompositorFrameMetadata LayerTreeHostImpl::MakeCompositorFrameMetadata() const {
           surface_layer_impl->primary_surface_info().id());
     }
   }
+
+  for (auto* surface_id : *active_tree_->HiddenSurfaceLayerIds()) {
+    metadata.referenced_surfaces.push_back(*surface_id);
+  }
+
   if (!InnerViewportScrollLayer())
     return metadata;