service worker: navigation preload basic setters/getters and flag

content/browser/service_worker/service_worker_dispatcher_host.h

Index: content/browser/service_worker/service_worker_dispatcher_host.h
diff --git a/content/browser/service_worker/service_worker_dispatcher_host.h b/content/browser/service_worker/service_worker_dispatcher_host.h
index bcd1dd8f721a5095ed15489af6fc605000cc6662..0e4441a944d7eec6a4490d1cf96f97746868c803 100644
--- a/content/browser/service_worker/service_worker_dispatcher_host.h
+++ b/content/browser/service_worker/service_worker_dispatcher_host.h
@@ -114,6 +114,11 @@ class CONTENT_EXPORT ServiceWorkerDispatcherHost : public BrowserMessageFilter {
   void OnGetRegistrationForReady(int thread_id,
                                  int request_id,
                                  int provider_id);
+  void OnSetNavigationPreload(int thread_id,
+                              int request_id,
+                              int handle_id,
+                              const std::string& value);
+  void OnGetNavigationPreload(int thread_id, int request_id, int handle_id);
   void OnProviderCreated(int provider_id,
                          int route_id,
                          ServiceWorkerProviderType provider_type,