promote.py: Archive installers to new gs://dart-archive bucket when promoting

dart/tools/signing_script.py

 #!/usr/bin/env python
-# 
+#
 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
-import hashlib
 import imp
 import optparse
 import os
 import subprocess
 import sys
 
 DART_DIR = os.path.dirname(os.path.dirname(__file__))
 GSUTIL = os.path.join(DART_DIR, 'third_party', 'gsutil', 'gsutil')
 BOT_UTILS = os.path.join(DART_DIR, 'tools', 'bots', 'bot_utils.py')
 BASENAME_PATTERN = 'darteditor-%(system)s-%(bits)s'
@@ skipping 233 matching lines @@
               presign_dir, locations[system]['%s_scratch' % name] % config)
 
           if locations[system]['zip']:
             # We copy a .app directory directory and zip it
             copy_and_zip(from_path, to_path)
           else:
             # We copy an .exe file
             copy_file(from_path, to_path)
       elif options.deploy:
         copy_tree(destination_dir, deploy_dir)
-  
+
         for name in ['editor', 'chrome', 'content_shell']:
           from_path = os.path.join(
               postsign_dir, locations[system]['%s_scratch' % name] % config)
           to_path = os.path.join(deploy_dir, locations[system][name])
 
           if locations[system]['zip']:
             # We unzip a zip file and copy the resulting signed .app directory
             unzip_and_copy(from_path, to_path)
           else:
             # We copy the signed .exe file
             copy_file(from_path, to_path)
 
         deploy_zip_file = os.path.abspath(deploy)
         with ChangedWorkingDirectory(deploy_dir):
           run(['zip', '-r9', deploy_zip_file, 'dart'])
 
         # Upload *.zip/*.zip.md5sum and set 'public-read' ACL
         if options.channel:
           upload_to_new_location(options.channel, config, deploy_zip_file)
         else:
           upload_to_old_location(config, deploy_zip_file)
 
 if __name__ == '__main__':
   main()