Suggest owners for OWNERS files that only have per-file owners.

testing_support/filesystem_mock.py

 # Copyright (c) 2011 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 errno
 import fnmatch
 import os
 import re
 import StringIO
 
@@ skipping 28 matching lines @@
     return path
 
   def dirname(self, path):
     if self.sep not in path:
       return ''
     return self._split(path)[0] or self.sep
 
   def exists(self, path):
     return self.isfile(path) or self.isdir(path)
 
+  def isabs(self, path):
+    return path.startswith(self.sep)

[M-A Ruel, 2012/12/13 23:25:16]

I assume you don't mind if this doesn't pass on Windows.

+
   def isfile(self, path):
     return path in self.files and self.files[path] is not None
 
   def isdir(self, path):
     if path in self.files:
       return False
     if not path.endswith(self.sep):
       path += self.sep
 
     # We need to use a copy of the keys here in order to avoid switching
@@ skipping 18 matching lines @@
     if self.files[path] is None:
       _RaiseNotFound(path)
     return self.files[path]
 
   @staticmethod
   def relpath(path, base):
     # This implementation is wrong in many ways; assert to check them for now.
     assert path.startswith(base)
     assert base.endswith('/')
     return path[len(base):]