Revert 237242 "Linux sandbox: move CurrentProcessHasOpenDirectories"

> Linux sandbox: move CurrentProcessHasOpenDirectories
> 
> Move CurrentProcessHasOpenDirectories() to the Credentials class and rename
> it to HasOpenDirectory().
> Also add some unittests.
> 
> BUG=312380
> R=jorgelo@chromium.org
> 
> Review URL: https://codereview.chromium.org/85403011

TBR=jln@chromium.org

Review URL: https://codereview.chromium.org/85343005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237251 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed