[WIP2] off-main-thread loading

content/renderer/service_worker/service_worker_fetch_context_impl.h

Index: content/renderer/service_worker/service_worker_fetch_context_impl.h
diff --git a/content/renderer/service_worker/service_worker_fetch_context_impl.h b/content/renderer/service_worker/service_worker_fetch_context_impl.h
index 71f6ef474025d750ddff218dfcaec83fb13cf23f..e656ada289575a2c5e189b27d878c8380c6a22ce 100644
--- a/content/renderer/service_worker/service_worker_fetch_context_impl.h
+++ b/content/renderer/service_worker/service_worker_fetch_context_impl.h
@@ -27,10 +27,12 @@ class ServiceWorkerFetchContextImpl : public blink::WebWorkerFetchContext {
   std::unique_ptr<blink::WebURLLoader> CreateURLLoader() override;
   void WillSendRequest(blink::WebURLRequest&) override;
   bool IsControlledByServiceWorker() const override;
+  void SetDataSaverEnabled(bool flag) override;
 
  private:
   mojom::WorkerURLLoaderFactoryProviderPtrInfo provider_info_;
   const int service_worker_provider_id_;
+  bool data_saver_enabled_ = false;
 
   // Initialized on the worker thread when InitializeOnWorkerThread() is called.
   std::unique_ptr<ResourceDispatcher> resource_dispatcher_;