diff -r 000000000000 -r 6474c204b198 toolkit/mozapps/extensions/test/browser/Makefile.in
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/mozapps/extensions/test/browser/Makefile.in	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+# 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/.
+
+ADDONSRC = $(srcdir)/addons
+TESTXPI = $(CURDIR)/$(DEPTH)/_tests/testing/mochitest/browser/$(relativesrcdir)/addons
+
+include $(topsrcdir)/config/rules.mk
+
+libs::
+	rm -rf $(TESTXPI)
+	$(NSINSTALL) -D $(TESTXPI)
+	if [ -d $(ADDONSRC) ]; then \
+		$(EXIT_ON_ERROR) \
+		for dir in $(ADDONSRC)/*; do \
+			base=`basename $$dir` ; \
+			(cd $$dir && zip -q $(TESTXPI)/$$base.xpi *) \
+		done \
+	fi