Fix an error in gclient revert where a directory is unexpected and locked

Fix an error in gclient revert where a directory is unexpected and locked

This would spurious try job failures because the gclient revert step would throw
an exception.

R=cmp@chromium.org
BUG=
TEST=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=133799

[M-A Ruel, 2012-04-24 18:48:45]

It would generate exceptions looking like that:


Traceback (most recent call last):
  File "depot_tools/gclient.py", line 1592, in <module>
    sys.exit(Main(sys.argv[1:]))
  File "depot_tools/gclient.py", line 1581, in Main
    return command(parser, argv[1:])
  File "depot_tools/gclient.py", line 1410, in CMDrevert
    return client.RunOnDeps('revert', args)
  File "depot_tools/gclient.py", line 1009, in RunOnDeps
    work_queue.flush(revision_overrides, command, args, options=self._options)
  File "depot_tools/gclient_utils.py", line 679, in run
    self.item.run(*self.args, **self.kwargs)
  File "depot_tools/gclient.py", line 552, in run
    scm.RunCommand(command, options, args, file_list)
  File "depot_tools/gclient_scm.py", line 127, in RunCommand
    return getattr(self, command)(options, args, file_list)
  File "depot_tools/gclient_scm.py", line 1069, in revert
    scm.SVN.Revert(self.checkout_path, callback=printcb)
  File "depot_tools/scm.py", line 1041, in Revert
    gclient_utils.RemoveDirectory(file_path)
  File "depot_tools/gclient_utils.py", line 170, in rmtree
    remove(os.rmdir, path)
  File "depot_tools/gclient_utils.py", line 150, in remove
    func(subpath)
OSError: [Errno 22] Argument invalide: 'src/third_party/xdg-utils/.'

[cmp, 2012-04-24 22:05:02]

lgtm

[commit-bot: I haz the power, 2012-04-24 23:08:48]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/maruel@chromium.org/10169034/1

[commit-bot: I haz the power, 2012-04-24 23:16:31]

Change committed as 133799