Limit timeout for foreign fetch events when triggered by another service worker.

content/browser/service_worker/service_worker_browsertest.cc

Index: content/browser/service_worker/service_worker_browsertest.cc
diff --git a/content/browser/service_worker/service_worker_browsertest.cc b/content/browser/service_worker/service_worker_browsertest.cc
index 8be954ff2cb99b81293fac8922486a02e4eb0327..9b2189a3f1a410b590a172164d0d355073abbfa1 100644
--- a/content/browser/service_worker/service_worker_browsertest.cc
+++ b/content/browser/service_worker/service_worker_browsertest.cc
@@ -791,7 +791,8 @@ class ServiceWorkerVersionBrowserTest : public ServiceWorkerBrowserTest {
     version_->SetStatus(ServiceWorkerVersion::ACTIVATED);
     fetch_dispatcher_.reset(new ServiceWorkerFetchDispatcher(
         std::move(request), version_.get(), RESOURCE_TYPE_MAIN_FRAME,
-        net::NetLogWithSource(), CreatePrepareReceiver(prepare_result),
+        base::nullopt, net::NetLogWithSource(),
+        CreatePrepareReceiver(prepare_result),
         CreateResponseReceiver(done, blob_context_.get(), result)));
     fetch_dispatcher_->Run();
   }