Handle managed users in a specific way

BUG=295164
R=nkostylev@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/25080002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226225 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226225