Support Service Worker NavigationPreload with PlzNavigate.

content/browser/service_worker/service_worker_fetch_dispatcher.cc

Index: content/browser/service_worker/service_worker_fetch_dispatcher.cc
diff --git a/content/browser/service_worker/service_worker_fetch_dispatcher.cc b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
index c6810ef22f171dfa8faedc56dd62e2bb0a1824fe..992f0e62fb9b99d252c9fbce5f91a9d2160b44cf 100644
--- a/content/browser/service_worker/service_worker_fetch_dispatcher.cc
+++ b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
@@ -296,11 +296,6 @@ void ServiceWorkerFetchDispatcher::MaybeStartNavigationPreload(
     // Origin-Trial for NavigationPreload.
     return;
   }
-  if (IsBrowserSideNavigationEnabled()) {
-    // TODO(horo): Support NavigationPreload with PlzNavigate.
-    NOTIMPLEMENTED();
-    return;
-  }
   DCHECK(!url_loader_factory_getter.is_null());
   mojom::URLLoaderFactoryPtr factory;
   url_loader_factory_getter.Run(mojo::GetProxy(&factory));