[WIP not ready for review] ServiceWorker Download support.

content/browser/download/save_file_manager.cc

Index: content/browser/download/save_file_manager.cc
diff --git a/content/browser/download/save_file_manager.cc b/content/browser/download/save_file_manager.cc
index d9d14302e31efe00c3d16a2a98bcda4fb53f2ec3..d9c0e53681cac16bc911417b9e6b9627a83d0398 100644
--- a/content/browser/download/save_file_manager.cc
+++ b/content/browser/download/save_file_manager.cc
@@ -316,7 +316,7 @@ void SaveFileManager::OnSaveURL(const GURL& url,
       request.get(), referrer,
       false,  // download.
       render_process_host_id, render_view_routing_id, render_frame_routing_id,
-      context);
+      -1 /*TODO(horo)*/, context, nullptr /*TODO(horo)*/);
 
   // So far, for saving page, we need fetch content from cache, in the
   // future, maybe we can use a configuration to configure this behavior.