gclient: fix recursedeps tuple/list validation for chromeos

Bug: 727685, 570091
Change-Id: I97a99d15930c1662c0ecfacd3755af27b282f686
Reviewed-on: https://chromium-review.googlesource.com/517800
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Reviewed-by: Paul Hobbs <phobbs@google.com>
Commit-Queue: Paweł Hajdan Jr. <phajdan.jr@chromium.org>

gclient_eval.py

@@ -71,7 +71,11 @@ _GCLIENT_SCHEMA = schema.Schema({
 
     # Whitelists deps for which recursion should be enabled.
     schema.Optional('recursedeps'): [
-        schema.Optional(schema.Or(basestring, (basestring, basestring)))
+        schema.Optional(schema.Or(
+            basestring,
+            (basestring, basestring),
+            [basestring, basestring]
+        )),
     ],
 
     # Blacklists directories for checking 'include_rules'.

tests/gclient_eval_unittest.py

@@ -119,6 +119,13 @@ deps_os = {
       gclient_eval.Check(
           'include_rules = {}', '<string>', {}, {'include_rules': {}})
 
+  def test_recursedeps_list(self):
+    gclient_eval.Check(
+        'recursedeps = [["src/third_party/angle", "DEPS.chromium"]]',
+        '<string>',
+        {},
+        {'recursedeps': [['src/third_party/angle', 'DEPS.chromium']]})
+
 
 if __name__ == '__main__':
   level = logging.DEBUG if '-v' in sys.argv else logging.FATAL