Docserver: Make MockFileSystem not iterate over the entire file system as part

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

 # 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 json
 import logging
 from StringIO import StringIO
 
 from appengine_blobstore import AppEngineBlobstore, BLOBSTORE_GITHUB
 from appengine_url_fetcher import AppEngineUrlFetcher
@@ skipping 111 matching lines @@
 
   def _ReadFile(self, path):
     try:
       zip_file = self._zip_file.Get()
     except Exception as e:
       logging.error('Github ReadFile error: %s' % e)
       return ''
     if zip_file is None:
       logging.error('Bad github zip file.')
       return ''
-    prefix = zip_file.namelist()[0][:-1]
+    prefix = zip_file.namelist()[0]
     return zip_file.read(prefix + path)
 
   def _ListDir(self, path):
     try:
       zip_file = self._zip_file.Get()
     except Exception as e:
       logging.error('Github ListDir error: %s' % e)
       return []
     if zip_file is None:
       logging.error('Bad github zip file.')
@@ skipping 56 matching lines @@
       self._stat_object_store.Set(path, version)
       return StatInfo(version)
     except StandardError as e:
       logging.warning(
           ('%s: got invalid or unexpected JSON from github. Response status ' +
            'was %s, content %s') % (e, result.status_code, result.content))
       return self._DefaultStat(path)
 
   def GetIdentity(self):
     return '%s@%s' % (self.__class__.__name__, StringIdentity(self._url))