Dispatch transfer size update notification on mojo-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 7226478159e96bbad5ccde8c7ad661adb51dee32..498cc36670e2900a3a422c651f6e02b2e2da4a6e 100644
--- a/content/renderer/service_worker/service_worker_context_client.cc
+++ b/content/renderer/service_worker/service_worker_context_client.cc
@@ -289,6 +289,8 @@ class ServiceWorkerContextClient::NavigationPreloadRequest final
     NOTREACHED();
   }
 
+  void OnTransferSizeUpdated(int64_t transfer_size_diff) override {}
+
   void OnStartLoadingResponseBody(
       mojo::ScopedDataPipeConsumerHandle body) override {
     DCHECK(!body_.is_valid());