network service: pass a URLLoaderFactory to renderers on SW registration

content/browser/service_worker/service_worker_url_loader_factory_creation.cc

Index: content/browser/service_worker/service_worker_url_loader_factory_creation.cc
diff --git a/content/browser/service_worker/service_worker_url_loader_factory_creation.cc b/content/browser/service_worker/service_worker_url_loader_factory_creation.cc
index 0f6c3dc8fe6ca63088c7ffe7d317275af4b5cb5a..a61921b31829fbad2cc6871051034ea38e40da14 100644
--- a/content/browser/service_worker/service_worker_url_loader_factory_creation.cc
+++ b/content/browser/service_worker/service_worker_url_loader_factory_creation.cc
@@ -195,4 +195,20 @@ ServiceWorkerURLLoaderFactoryCreation::InitializeForNavigation(
   return mojom::URLLoaderFactoryPtrInfo();
 }
 
+// static
+mojom::URLLoaderFactoryPtrInfo
+ServiceWorkerURLLoaderFactoryCreation::InitializeForRenderer(
+    ServiceWorkerProviderHost* provider_host) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  if (!provider_host->IsContextAlive())
+    return mojom::URLLoaderFactoryPtrInfo();
+
+  mojom::URLLoaderFactoryPtr controllee;
+  mojo::MakeStrongBinding(
+      base::MakeUnique<ControlleeHandlerFactory>(provider_host),
+      mojo::MakeRequest(&controllee));
+  return controllee.PassInterface();
+}
+
 }  // namespace content