Break config_default into master_site_configs.

site_config/config.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.
 
 """Declares a number of site-dependent variables for use by scripts.
 
 A typical use of this module would be
 
   import chromium_config as config
 
@@ skipping 63 matching lines @@
                       'icudt42.dll',
                       'icudt46.dll',
                       'plugins\\npapi_layout_test_plugin.dll',
                      ]
 
   # Archive everything in these directories, using glob.
   test_dirs_to_archive = ['fonts']
   # Create these directories, initially empty, in the archive.
   test_dirs_to_create = ['plugins', 'fonts']
 
-  # Directories in which to store built files, for dev, official, and full
-  # builds.
-  archive_host = config_private.Archive.archive_host
-  www_dir_base = config_private.Archive.www_dir_base
-
 
 class Distributed(config_private.Distributed):
   # File holding current version information.
   version_file = 'VERSION'