Docserver: Factor SamplesModel out of SamplesDataSource

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

Index: chrome/common/extensions/docs/server2/caching_file_system.py
diff --git a/chrome/common/extensions/docs/server2/caching_file_system.py b/chrome/common/extensions/docs/server2/caching_file_system.py
index 59d8030c33af19dbdf04f0c092ad32d776009f3b..261c7e34f45657cd3df89a7dc6370a40739eee3b 100644
--- a/chrome/common/extensions/docs/server2/caching_file_system.py
+++ b/chrome/common/extensions/docs/server2/caching_file_system.py
@@ -7,7 +7,7 @@ import sys
 
 from file_system import FileSystem, StatInfo, FileNotFoundError
 from future import Future
-from path_util import IsDirectory
+from path_util import IsDirectory, ToDirectory
 from third_party.json_schema_compiler.memoize import memoize
 
 
@@ -43,8 +43,7 @@ class CachingFileSystem(FileSystem):
     # Always stat the parent directory, since it will have the stat of the child
     # anyway, and this gives us an entire directory's stat info at once.
     dir_path, file_path = posixpath.split(path)
-    if dir_path and not dir_path.endswith('/'):
-      dir_path += '/'
+    dir_path = ToDirectory(dir_path)

[ahernandez, 2014/08/04 20:40:02]

I had to add a few of these because the path '' was getting transformed into
'/', which is not a valid docserver path.

 
     def make_stat_info(dir_stat):
       '''Converts a dir stat into the correct resulting StatInfo; if the Stat