Extension docs server: many changes to bring down the latency of the server,

chrome/common/extensions/docs/server2/memcache_file_system_test.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 os
 import unittest
 
 import appengine_memcache as memcache
 from appengine_memcache import AppEngineMemcache
-from file_system import FileSystem
+from file_system import FileSystem, StatInfo
 from future import Future
 from local_file_system import LocalFileSystem
 from memcache_file_system import MemcacheFileSystem
 
 class _FakeFileSystem(FileSystem):
   def __init__(self):
     self.stat_value = 0
     self._stat_count = 0
     self._read_count = 0
 
   def CheckAndReset(self, read_count=0, stat_count=0):
     try:
       return (self._read_count == read_count and
               self._stat_count == stat_count)
     finally:
       self._read_count = 0
       self._stat_count = 0
 
   def Stat(self, path):
     self._stat_count += 1
-    return self.StatInfo(
+    return StatInfo(
         self.stat_value,
         dict((path + str(i), self.stat_value) for i in range(5)))
 
   def Read(self, paths, binary=False):
     self._read_count += 1
     return Future(value=dict((path, path) for path in paths))
 
 class MemcacheFileSystemTest(unittest.TestCase):
   def setUp(self):
     self._memcache = AppEngineMemcache('')
@@ skipping 75 matching lines @@
     self.assertTrue(fake_fs.CheckAndReset())
 
     self._DeleteStatCacheItem('bob/bob0')
     self.assertEqual('bob/bob0', file_system.ReadSingle('bob/bob0'))
     self.assertTrue(fake_fs.CheckAndReset(stat_count=1))
     self.assertEqual('bob/bob0', file_system.ReadSingle('bob/bob0'))
     self.assertTrue(fake_fs.CheckAndReset())
 
 if __name__ == '__main__':
   unittest.main()