Add an alternate default boto file for bootstrapping source.

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 28 matching lines @@
     if not os.path.exists(path):
       raise FileNotFoundError('GSUtil not found in %s' % path)
     self.path = path
     self.timeout = timeout
     self.boto_path = boto_path
 
   def call(self, *args):
     env = os.environ.copy()
     if self.boto_path:
       env['AWS_CREDENTIAL_FILE'] = self.boto_path
+    else:
+      custompath = env.get('AWS_CREDENTIAL_FILE', '~/.boto') + '.depot_tools'
+      custompath = os.path.expanduser(custompath)
+      if os.path.exists(custompath):
+        env['AWS_CREDENTIAL_FILE'] = custompath
+
     return subprocess2.call((sys.executable, self.path) + args,
                             env=env,
                             timeout=self.timeout)
 
   def check_call(self, *args):
     env = os.environ.copy()
     if self.boto_path:
       env['AWS_CREDENTIAL_FILE'] = self.boto_path

[Ryan Tseng, 2013/06/26 19:26:31]

Also need to do it here.

     ((out, err), code) = subprocess2.communicate(
         (sys.executable, self.path) + args,
         stdout=subprocess2.PIPE,
         stderr=subprocess2.PIPE,
         env=env,
         timeout=self.timeout)
 
     # Parse output.
     status_code_match = re.search('status=([0-9]+)', err)
     if status_code_match:
@@ skipping 262 matching lines @@
     return code
 
   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)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))