Remove --no_resume from download_from_google_storage.py

download_from_google_storage.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.
 
 """Download files from Google Storage based on SHA1 sums."""
 
 
 import hashlib
 import optparse
@@ skipping 356 matching lines @@
   parser.add_option('-o', '--output',
                     help='Specify the output file name. Defaults to: '
                          '(a) Given a SHA1 hash, the name is the SHA1 hash. '
                          '(b) Given a .sha1 file or directory, the name will '
                          'match (.*).sha1.')
   parser.add_option('-b', '--bucket',
                     help='Google Storage bucket to fetch from.')
   parser.add_option('-e', '--boto',
                     help='Specify a custom boto file.')
   parser.add_option('-c', '--no_resume', action='store_true',
-                    help='Resume download if file is partially downloaded.')
+                    help='DEPRECATED: Resume download if file is '
+                         'partially downloaded.')
   parser.add_option('-f', '--force', action='store_true',
                     help='Force download even if local file exists.')
   parser.add_option('-i', '--ignore_errors', action='store_true',
                     help='Don\'t throw error if we find an invalid .sha1 file.')
   parser.add_option('-r', '--recursive', action='store_true',
                     help='Scan folders recursively for .sha1 files. '
                          'Must be used with -d/--directory')
   parser.add_option('-t', '--num_threads', default=1, type='int',
                     help='Number of downloader threads to run.')
   parser.add_option('-d', '--directory', action='store_true',
@@ skipping 105 matching lines @@
       # Target is a .sha1 file.
       if not input_filename.endswith('.sha1'):
         parser.error('--sha1_file is specified, but the input filename '
                      'does not end with .sha1, and no --output is specified. '
                      'Either make sure the input filename has a .sha1 '
                      'extension, or specify --output.')
       options.output = input_filename[:-5]
     else:
       parser.error('Unreachable state.')
 
-  # Check if output file already exists.
-  if not options.directory and not options.force and not options.no_resume:
-    if os.path.exists(options.output):
-      parser.error('Output file %s exists and --no_resume is specified.'
-                   % options.output)
-
   base_url = 'gs://%s' % options.bucket
 
   return download_from_google_storage(
       input_filename, base_url, gsutil, options.num_threads, options.directory,
       options.recursive, options.force, options.output, options.ignore_errors,
       options.sha1_file, options.verbose, options.auto_platform,
       options.extract)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))