[WIP] off-main-thread loading

content/renderer/service_worker/service_worker_context_client.cc

Index: content/renderer/service_worker/service_worker_context_client.cc
diff --git a/content/renderer/service_worker/service_worker_context_client.cc b/content/renderer/service_worker/service_worker_context_client.cc
index ab400ee2f4ffc7356a21373c6772a8e7f50a2e0a..e3f981aa07b5f1701668d8fac1a5f3b3b6cacada 100644
--- a/content/renderer/service_worker/service_worker_context_client.cc
+++ b/content/renderer/service_worker/service_worker_context_client.cc
@@ -38,20 +38,25 @@
 #include "content/common/service_worker/service_worker_messages.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_utils.h"
+#include "content/common/worker_fetch_context_factory.mojom.h"
+#include "content/public/common/content_features.h"
 #include "content/public/common/push_event_payload.h"
 #include "content/public/common/referrer.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/renderer/document_state.h"
 #include "content/renderer/devtools/devtools_agent.h"
 #include "content/renderer/render_thread_impl.h"
+#include "content/renderer/renderer_blink_platform_impl.h"
 #include "content/renderer/service_worker/embedded_worker_devtools_agent.h"
 #include "content/renderer/service_worker/embedded_worker_dispatcher.h"
 #include "content/renderer/service_worker/embedded_worker_instance_client_impl.h"
+#include "content/renderer/service_worker/service_worker_fetch_context_info_impl.h"
 #include "content/renderer/service_worker/service_worker_type_converters.h"
 #include "content/renderer/service_worker/service_worker_type_util.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_macros.h"
 #include "net/http/http_response_headers.h"
+#include "third_party/WebKit/public/platform/InterfaceProvider.h"
 #include "third_party/WebKit/public/platform/URLConversion.h"
 #include "third_party/WebKit/public/platform/WebMessagePortChannel.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
@@ -373,7 +378,6 @@ class ServiceWorkerContextClient::NavigationPreloadRequest final
     DCHECK(!response_);
     DCHECK(!downloaded_file);
     response_ = base::MakeUnique<blink::WebURLResponse>();
-    // TODO(horo): Set report_security_info to true when DevTools is attached.
     const bool report_security_info = false;
     WebURLLoaderImpl::PopulateURLResponse(url_, response_head, response_.get(),
                                           report_security_info);
@@ -976,6 +980,7 @@ ServiceWorkerContextClient::createServiceWorkerNetworkProvider() {
           MSG_ROUTING_NONE, SERVICE_WORKER_PROVIDER_FOR_CONTROLLER,
           true /* is_parent_frame_secure */);
   provider_context_ = provider->context();
+  network_provider_id_ = provider->provider_id();
 
   // Tell the network provider about which version to load.
   provider->SetServiceWorkerVersionId(service_worker_version_id_,
@@ -985,6 +990,22 @@ ServiceWorkerContextClient::createServiceWorkerNetworkProvider() {
   return new WebServiceWorkerNetworkProviderImpl(std::move(provider));
 }
 
+blink::WebWorkerFetchContextInfo*
+ServiceWorkerContextClient::createServiceWorkerFetchContextInfo() {
+  if (!base::FeatureList::IsEnabled(features::kOffMainThreadFetch))
+    return nullptr;
+  // TODO(horo): more simple mojo IPC. We only need URLLoaderFactory.
+  mojom::WorkerFetchContextFactoryPtr worker_fetch_context_factory;
+  RenderThreadImpl::current()
+      ->blink_platform_impl()
+      ->interfaceProvider()
+      ->getInterface(mojo::MakeRequest(&worker_fetch_context_factory));
+
+  // Blink is responsible for deleting the returned object.
+  return new ServiceWorkerFetchContextInfoImpl(
+      worker_fetch_context_factory.PassInterface(), network_provider_id_);
+}
+
 blink::WebServiceWorkerProvider*
 ServiceWorkerContextClient::createServiceWorkerProvider() {
   DCHECK(main_thread_task_runner_->RunsTasksOnCurrentThread());