Docserver: Use GitilesFileSystem instead of SubversionFileSystem

chrome/common/extensions/docs/server2/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 traceback
 
 from future import Future
 from path_util import (
     AssertIsDirectory, AssertIsValid, IsDirectory, IsValid, SplitParent,
@@ skipping 11 matching lines @@
     return Future(callback=boom)
 
 
 class FileNotFoundError(_BaseFileSystemException):
   '''Raised when a file isn't found for read or stat.
   '''
   def __init__(self, filename):
     _BaseFileSystemException.__init__(self, filename)
 
 
+class FileSystemThrottledError(_BaseFileSystemException):
+  '''Raised when access to a file system resource is temporarily unavailable
+  due to service throttling.
+  '''
+  def __init__(self, filename):
+    _BaseFileSystemException.__init__(self, filename)
+
+
 class FileSystemError(_BaseFileSystemException):
   '''Raised on when there are errors reading or statting files, such as a
   network timeout.
   '''
   def __init__(self, filename):
     _BaseFileSystemException.__init__(self, filename)
 
 
 class StatInfo(object):
   '''The result of calling Stat on a FileSystem.
@@ skipping 168 matching lines @@
             self.GetIdentity() == other.GetIdentity())
 
   def __ne__(self, other):
     return not (self == other)
 
   def __repr__(self):
     return '<%s>' % type(self).__name__
 
   def __str__(self):
     return repr(self)