Routes calls to WM through WS

components/mus/mus_app.h

Index: components/mus/mus_app.h
diff --git a/components/mus/mus_app.h b/components/mus/mus_app.h
index cace9415d07a5942ce6d63485f200b5699826436..0ad3f3d74a762b0e29aa14bb1ece601a368b1877 100644
--- a/components/mus/mus_app.h
+++ b/components/mus/mus_app.h
@@ -80,7 +80,8 @@ class MandolineUIServicesApp
   // mojom::WindowTreeHostFactory implementation.
   void CreateWindowTreeHost(mojo::InterfaceRequest<mojom::WindowTreeHost> host,
                             mojom::WindowTreeHostClientPtr host_client,
-                            mojom::WindowTreeClientPtr tree_client) override;
+                            mojom::WindowTreeClientPtr tree_client,
+                            mojom::WindowManagerPtr window_manager) override;
 
   mojo::WeakBindingSet<mojom::WindowTreeHostFactory> factory_bindings_;
   mojo::ApplicationImpl* app_impl_;