[WIP not ready for review] ServiceWorker Download support.

content/public/browser/download_url_parameters.h

Index: content/public/browser/download_url_parameters.h
diff --git a/content/public/browser/download_url_parameters.h b/content/public/browser/download_url_parameters.h
index d5c32d8dfb24b4a65f14a5fb60d3c8efa66b1d18..4e1706246805f0cc2b81b70b676098b6ed058800 100644
--- a/content/public/browser/download_url_parameters.h
+++ b/content/public/browser/download_url_parameters.h
@@ -221,6 +221,11 @@ class CONTENT_EXPORT DownloadUrlParameters {
     return render_frame_host_routing_id_;
   }
 
+  void set_service_worker_provider_id(int id) {
+    service_worker_provider_id_ = id;
+  }
+  int service_worker_provider_id() const { return service_worker_provider_id_; }
+
   const RequestHeadersType& request_headers() const { return request_headers_; }
   net::URLRequestContextGetter* url_request_context_getter() {
     return url_request_context_getter_.get();
@@ -261,6 +266,7 @@ class CONTENT_EXPORT DownloadUrlParameters {
   int render_process_host_id_;
   int render_view_host_routing_id_;
   int render_frame_host_routing_id_;
+  int service_worker_provider_id_;
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
   DownloadSaveInfo save_info_;
   GURL url_;