Implement ServiceWorkerFetchDispatcher::MaybeStartNavigationPreload().

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 386f0a92ada69afab4eda20eeb282ff96faa3972..71cbd0864898886bddac7b641cbf52e07fe514e3 100644
--- a/content/browser/service_worker/service_worker_dispatcher_host.h
+++ b/content/browser/service_worker/service_worker_dispatcher_host.h
@@ -25,7 +25,7 @@ struct EmbeddedWorkerHostMsg_ReportConsoleMessage_Params;
 
 namespace url {
 class Origin;
-}
+}  // namespace url
 
 namespace content {
 
@@ -50,7 +50,8 @@ class CONTENT_EXPORT ServiceWorkerDispatcherHost
   ServiceWorkerDispatcherHost(
       int render_process_id,
       MessagePortMessageFilter* message_port_message_filter,
-      ResourceContext* resource_context);
+      ResourceContext* resource_context,
+      const MojoURLLoaderFactoryGetter& url_loader_factory_getter);
 
   void Init(ServiceWorkerContextWrapper* context_wrapper);
 
@@ -85,6 +86,10 @@ class CONTENT_EXPORT ServiceWorkerDispatcherHost
     return message_port_message_filter_;
   }
 
+  MojoURLLoaderFactoryGetter url_loader_factory_getter() const {
+    return url_loader_factory_getter_;
+  }
+
  protected:
   ~ServiceWorkerDispatcherHost() override;
 
@@ -249,6 +254,7 @@ class CONTENT_EXPORT ServiceWorkerDispatcherHost
   const int render_process_id_;
   MessagePortMessageFilter* const message_port_message_filter_;
   ResourceContext* resource_context_;
+  const MojoURLLoaderFactoryGetter url_loader_factory_getter_;
   scoped_refptr<ServiceWorkerContextWrapper> context_wrapper_;
 
   IDMap<ServiceWorkerHandle, IDMapOwnPointer> handles_;