Bug 860213 - Use async version of set metadata. r=Neil

toolkit/components/downloads/nsDownloadManager.cpp

@@ -2525,6 +2525,20 @@ nsDownload::~nsDownload()
 {
 }
 
+#ifdef MOZ_ENABLE_GIO
+static void gio_set_metadata_done(GObject *source_obj, GAsyncResult *res, gpointer user_data)
+{
+  GError *err = NULL;
+  g_file_set_attributes_finish(G_FILE(source_obj), res, NULL, &err);
+  if (err) {
+#ifdef DEBUG
+    NS_DebugBreak(NS_DEBUG_WARNING, "Set file metadata failed: ", err->message, __FILE__, __LINE__);
+#endif
+    g_error_free(err);
+  }
+}
+#endif
+
 nsresult
 nsDownload::SetState(DownloadState aState)
 {
@@ -2670,11 +2684,14 @@ nsDownload::SetState(DownloadState aState)
           GFile* gio_file = g_file_new_for_path(NS_ConvertUTF16toUTF8(path).get());
           nsCString source_uri;
           mSource->GetSpec(source_uri);
-
-          g_file_set_attribute(gio_file, "metadata::download-uri",
-                               G_FILE_ATTRIBUTE_TYPE_STRING,
-                               (gpointer)source_uri.get(),
-                               G_FILE_QUERY_INFO_NONE, NULL, NULL);
+          GFileInfo *file_info = g_file_info_new();
+          g_file_info_set_attribute_string(file_info, "metadata::download-uri", source_uri.get());
+          g_file_set_attributes_async(gio_file,
+                                      file_info,
+                                      G_FILE_QUERY_INFO_NONE,
+                                      G_PRIORITY_DEFAULT,
+                                      NULL, gio_set_metadata_done, NULL);
+          g_object_unref(file_info);
           g_object_unref(gio_file);
 #endif
         }