[Mac/GN] In clean_up_old_versions.py, allow the Versions/ directory to not exist.

[Mac/GN] In clean_up_old_versions.py, allow the Versions/ directory to not exist.

This can happen in a clean build if the clean_up_old_versions step runs before
bundling, in a parallelized build.

R=mark@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/342dc8a7ccd488ff10c258e00587bdac96fdcb15

[Mark Mentovai, 2016-07-25 21:03:09]

LGTM

[commit-bot: I haz the power, 2016-07-25 21:06:17]

Description was changed from

==========
[Mac/GN] In clean_up_old_versions.py, allow the Versions/ directory to not
exist.

This can happen in a clean build if the clean_up_old_versions step runs before
bundling, in a parallelized build.

R=mark@chromium.org
==========

to

==========
[Mac/GN] In clean_up_old_versions.py, allow the Versions/ directory to not
exist.

This can happen in a clean build if the clean_up_old_versions step runs before
bundling, in a parallelized build.

R=mark@chromium.org

Committed: https://crrev.com/342dc8a7ccd488ff10c258e00587bdac96fdcb15
Cr-Commit-Position: refs/heads/master@{#407570}
==========

[commit-bot: I haz the power, 2016-07-25 21:06:19]

Patchset 1 (id:??) landed as
https://crrev.com/342dc8a7ccd488ff10c258e00587bdac96fdcb15
Cr-Commit-Position: refs/heads/master@{#407570}

[Robert Sesek, 2016-07-25 21:07:23]

Description was changed from

==========
[Mac/GN] In clean_up_old_versions.py, allow the Versions/ directory to not
exist.

This can happen in a clean build if the clean_up_old_versions step runs before
bundling, in a parallelized build.

R=mark@chromium.org

Committed: https://crrev.com/342dc8a7ccd488ff10c258e00587bdac96fdcb15
Cr-Commit-Position: refs/heads/master@{#407570}
==========

to

==========
[Mac/GN] In clean_up_old_versions.py, allow the Versions/ directory to not
exist.

This can happen in a clean build if the clean_up_old_versions step runs before
bundling, in a parallelized build.

R=mark@chromium.org

Committed:
https://chromium.googlesource.com/chromium/src/+/342dc8a7ccd488ff10c258e00587...
==========

[Robert Sesek, 2016-07-25 21:07:25]

Committed patchset #1 (id:1) manually as
342dc8a7ccd488ff10c258e00587bdac96fdcb15.