Docserver: Attach intro metadata to the template itself, not to an object which

chrome/common/extensions/docs/server2/caching_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 posixpath
 import sys
 
 from file_system import FileSystem, StatInfo, FileNotFoundError
 from future import Future
 from object_store_creator import ObjectStoreCreator
@@ skipping 61 matching lines @@
     if dir_stat is None:
       dir_stat = self._file_system.Stat(dir_path)
       assert dir_stat is not None  # should raise a FileNotFoundError
       self._stat_object_store.Set(dir_path, dir_stat)
 
     if path == dir_path:
       stat_info = dir_stat
     else:
       file_version = dir_stat.child_versions.get(file_path)
       if file_version is None:
-        raise FileNotFoundError('No stat found for %s in %s' % (path, dir_path))
+        raise FileNotFoundError('No stat found for %s in %s (found %s)' %
+                                (path, dir_path, dir_stat.child_versions))
       stat_info = StatInfo(file_version)
 
     return stat_info
 
   def Read(self, paths, binary=False):
     '''Reads a list of files. If a file is in memcache and it is not out of
     date, it is returned. Otherwise, the file is retrieved from the file system.
     '''
     read_object_store = (self._read_binary_object_store if binary else
                          self._read_object_store)
@@ skipping 27 matching lines @@
         uncached,
         results,
         self,
         read_object_store))
 
   def GetIdentity(self):
     return self._file_system.GetIdentity()
 
   def __repr__(self):
     return '%s of <%s>' % (type(self).__name__, repr(self._file_system))