Removes WindowTreeImpl::creator_id_

components/mus/mus_app.cc

Index: components/mus/mus_app.cc
diff --git a/components/mus/mus_app.cc b/components/mus/mus_app.cc
index ff44dbc18e874a08a5ea91f41319ecb53401dbe2..d319aa6d3bd4c17e08faae6abfc0aa4f8e4c1cdd 100644
--- a/components/mus/mus_app.cc
+++ b/components/mus/mus_app.cc
@@ -98,12 +98,11 @@ ws::ClientConnection*
 MandolineUIServicesApp::CreateClientConnectionForEmbedAtWindow(
     ws::ConnectionManager* connection_manager,
     mojo::InterfaceRequest<mojom::WindowTree> tree_request,
-    ConnectionSpecificId creator_id,
     const ws::WindowId& root_id,
     uint32_t policy_bitmask,
     mojom::WindowTreeClientPtr client) {
-  scoped_ptr<ws::WindowTreeImpl> service(new ws::WindowTreeImpl(
-      connection_manager, creator_id, root_id, policy_bitmask));
+  scoped_ptr<ws::WindowTreeImpl> service(
+      new ws::WindowTreeImpl(connection_manager, root_id, policy_bitmask));
   return new ws::DefaultClientConnection(std::move(service), connection_manager,
                                          std::move(tree_request),
                                          std::move(client));