diff -r 000000000000 -r 6474c204b198 browser/app.mozbuild
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/app.mozbuild	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+if not CONFIG['LIBXUL_SDK']:
+    app_libxul_dirs = []
+    app_libxul_static_dirs = []
+    include('/toolkit/toolkit.mozbuild')
+
+if CONFIG['MOZ_EXTENSIONS']:
+    add_tier_dir('app', 'extensions')
+
+add_tier_dir('app', [CONFIG['MOZ_BRANDING_DIRECTORY']])
+
+if CONFIG['MOZ_WEBAPP_RUNTIME']:
+    add_tier_dir('app', 'webapprt')
+
+# Never add tier dirs after browser because they apparently won't get
+# packaged properly on Mac.
+add_tier_dir('app', 'browser')
+