Bug 898725 - Fix mochitest mach target regression, r=jgriffin

testing/mochitest/mach_commands.py

@@ -108,7 +108,7 @@ class MochitestRunner(MozbuildObject):
 
         runner = mochitest.Mochitest(automation)
 
-        opts = mochitest.MochitestOptions(automation, tests_dir)
+        opts = mochitest.MochitestOptions(automation)
         options, args = opts.parse_args([])
 
         # Need to set the suite options before verifyOptions below.

testing/mochitest/mochitest_options.py

@@ -1,3 +1,7 @@
+# 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/.
+
 import optparse
 import os
 import sys