Fix a specific use case for the CQ.

gcl.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.
 
 """\
 Wrapper script around Rietveld's upload.py that simplifies working with groups
 of files.
 """
 
@@ skipping 105 matching lines @@
 def GetCachedFile(filename, max_age=60*60*24*3, use_root=False):
   """Retrieves a file from the repository and caches it in GetCacheDir() for
   max_age seconds.
 
   use_root: If False, look up the arborescence for the first match, otherwise go
             directory to the root repository.
 
   Note: The cache will be inconsistent if the same file is retrieved with both
         use_root=True and use_root=False. Don't be stupid.
   """
+  if not os.path.isdir(GetCacheDir()):
+    os.makedirs(GetCacheDir())
+
   if filename not in FILES_CACHE:
     # Don't try to look up twice.
     FILES_CACHE[filename] = None
     # First we check if we have a cached version.
     try:
       cached_file = os.path.join(GetCacheDir(), filename)
     except (gclient_utils.Error, subprocess2.CalledProcessError):
       return None
     if (not os.path.exists(cached_file) or
         (time.time() - os.stat(cached_file).st_mtime) > max_age):
@@ skipping 1321 matching lines @@
       raise
     print >> sys.stderr, (
         'AppEngine is misbehaving and returned HTTP %d, again. Keep faith '
         'and retry or visit go/isgaeup.\n%s') % (e.code, str(e))
     return 1
 
 
 if __name__ == "__main__":
   fix_encoding.fix_encoding()
   sys.exit(main(sys.argv[1:]))