Network traffic annotation added to URLLoaderImpl.

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 cc46e57c74d150c71101f8cfec8752e7956f779f..61d1ab68480067f49c049d8669e45179a5d57c10 100644
--- a/content/browser/service_worker/service_worker_fetch_dispatcher.cc
+++ b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
@@ -665,7 +665,8 @@ bool ServiceWorkerFetchDispatcher::MaybeStartNavigationPreload(
   url_loader_factory->CreateLoaderAndStart(
       mojo::MakeRequest(&url_loader_associated_ptr),
       original_info->GetRouteID(), request_id, mojom::kURLLoadOptionNone,
-      request, std::move(url_loader_client_ptr_to_pass));
+      request, std::move(url_loader_client_ptr_to_pass),
+      net::MutableNetworkTrafficAnnotationTag(NO_TRAFFIC_ANNOTATION_YET));
 
   std::unique_ptr<DelegatingURLLoader> url_loader(
       base::MakeUnique<DelegatingURLLoader>(