Disable a DeviceLocalAccountTest test I missed in r242326.

BUG=330454
TBR=skuhne@chromium.org,mnissler@chromium.org

Review URL: https://codereview.chromium.org/93783008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242390 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242390