Fix obsolete gsutil command in scripts. Delete editor signing script.

tools/bots/cross-vm.py

 #!/usr/bin/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 os
 import re
 import sys
 
 import bot
@@ skipping 33 matching lines @@
         run([sys.executable, build_py,
              '-m%s' % mode, '--arch=%s' % arch, 'runtime'])
 
       with bot.BuildStep('Create build tarball'):
         run(['tar', '-cjf', tarball, '--exclude=**/obj',
              '--exclude=**/obj.host', '--exclude=**/obj.target',
              '--exclude=**/*analyzer*', 'out/', 'tools/testing/bin/'])
 
       with bot.BuildStep('Upload build tarball'):
         uri = "%s/%s" % (GCS_BUCKET, tarball)
-        run([GSUTIL, 'cp', tarball, uri])
-        run([GSUTIL, 'setacl', 'public-read', uri])
+        run([GSUTIL, 'cp', '-a', 'public-read', tarball, uri])
 
     elif num_run == 2:
       with bot.BuildStep('tests'):
         print "Please see the target device for results."
         print "We no longer record/replay tests."
     else:
       raise Exception("Invalid annotated steps run")
   finally:
     for path in temporary_files:
       if os.path.exists(path):
@@ skipping 48 matching lines @@
     total_shards = target_vm_pattern_match.group(4)
     target_builder(arch, mode, total_shards, shard_index)
   else:
     raise Exception("Unknown builder name %s" % name)
 
 if __name__ == '__main__':
   try:
     sys.exit(main())
   except OSError as e:
     sys.exit(e.errno)