Fixed wrong test

BUG=366554

Review URL: https://codereview.chromium.org/271563002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@268647 0039d316-1c4b-4281-b951-d872f2087c98

presubmit_support.py

@@ -1427,7 +1427,7 @@ def DoPresubmitChecks(change,
 
 def ScanSubDirs(mask, recursive):
   if not recursive:
-    return [x for x in glob.glob(mask) if '.svn' not in x and '.git' not in x]
+    return [x for x in glob.glob(mask) if x not in ('.svn', '.git')]
   else:
     results = []
     for root, dirs, files in os.walk('.'):