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 81e72bc04c97f955e84646d2fb34eddf8f5224f9..04ee9a4c46b831fc8bbcf9d854b0560bd9518a90 100644
--- a/content/browser/service_worker/service_worker_fetch_dispatcher.cc
+++ b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
@@ -662,7 +662,8 @@ 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>(