diff -r 000000000000 -r 6474c204b198 toolkit/components/jsdownloads/src/Downloads.manifest
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/jsdownloads/src/Downloads.manifest	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+component {1b4c85df-cbdd-4bb6-b04e-613caece083c} DownloadLegacy.js
+
+# The following contract definition is commented out because the same contract
+# is also implemented in "toolkit/components/downloads".  To use the component
+# in this folder experimentally, the contract must be registered manually.  When
+# the other folder is not included in builds anymore (bug 851471), we'll be able
+# to define the contract implementation in this manifest.
+# contract @mozilla.org/transfer;1 {1b4c85df-cbdd-4bb6-b04e-613caece083c}