Fix bug in webkitpy/w3c/directory_owners_extractor.py

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

Index: third_party/WebKit/Tools/Scripts/webkitpy/w3c/directory_owners_extractor_unittest.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/w3c/directory_owners_extractor_unittest.py b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/directory_owners_extractor_unittest.py
index 213e436bbcb2489c2933b022a1ac10b3567e8acf..bf6ee437dd36814169899b58e6f223b698c18d00 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/w3c/directory_owners_extractor_unittest.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/directory_owners_extractor_unittest.py
@@ -26,7 +26,6 @@ class DirectoryOwnersExtractorTest(unittest.TestCase):
             '# external/wpt/webstorage [ Pass ]',
             'external/wpt/webvtt [ Skip ]',
         ]
-
         self.assertEqual(
             self.extractor.lines_to_owner_map(lines),
             {
@@ -35,6 +34,20 @@ class DirectoryOwnersExtractorTest(unittest.TestCase):
                 'external/wpt/webstorage': ['michaeln@chromium.org', 'jsbell@chromium.org'],
             })
 
+    def test_lines_to_owner_map_no_owners(self):
+        lines = [
+            '## Owners: someone@chromium.org',
+            '# external/wpt/something [ Pass ]',
+            '## Owners: explicitly no owners but still enabled',
+            '# external/wpt/common [ Pass ]',
+        ]
+        self.assertEqual(
+            self.extractor.lines_to_owner_map(lines),
+            {
+                'external/wpt/something': ['someone@chromium.org'],
+            })
+
+
     def test_list_owners(self):
         self.extractor.owner_map = {
             'external/wpt/foo': ['a@chromium.org', 'c@chromium.org'],