Ignore OWNERS files during external/wpt import and export

third_party/WebKit/Tools/Scripts/webkitpy/w3c/test_importer_unittest.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import collections
 
 from webkitpy.common.checkout.git_mock import MockGit
 from webkitpy.common.host_mock import MockHost
 from webkitpy.common.system.executive_mock import MockExecutive
 from webkitpy.common.system.log_testing import LoggingTestCase
@@ skipping 188 matching lines @@
         host = MockHost()
         dest_path = '/mock-checkout/third_party/WebKit/LayoutTests/external/wpt'
         host.filesystem.write_text_file(dest_path + '/b-expected.txt', '')
         host.filesystem.write_text_file(dest_path + '/b.x-expected.txt', '')
         host.filesystem.write_text_file(dest_path + '/b.x.html', '')
         importer = TestImporter(host)
         importer._delete_orphaned_baselines(dest_path)
         self.assertFalse(host.filesystem.exists(dest_path + '/b-expected.txt'))
         self.assertTrue(host.filesystem.exists(dest_path + '/b.x-expected.txt'))
         self.assertTrue(host.filesystem.exists(dest_path + '/b.x.html'))
+
+    def test_keeps_owners_files_and_baselines(self):
+        host = MockHost()
+        dest_path = '/mock-checkout/third_party/WebKit/LayoutTests/external/wpt'
+        host.filesystem.write_text_file(dest_path + '/foo-test.html', '')
+        host.filesystem.write_text_file(dest_path + '/foo-test-expected.txt', '')
+        host.filesystem.write_text_file(dest_path + '/OWNERS', '')
+        host.filesystem.write_text_file(dest_path + '/bar/baz/OWNERS', '')
+        importer = TestImporter(host)
+        importer._clear_out_dest_path(dest_path)
+        self.assertFalse(host.filesystem.exists(dest_path + '/foo-test.html'))
+        self.assertTrue(host.filesystem.exists(dest_path + '/foo-test-expected.txt'))
+        self.assertTrue(host.filesystem.exists(dest_path + '/OWNERS'))
+        self.assertTrue(host.filesystem.exists(dest_path + '/bar/baz/OWNERS'))