Special message for supervised user with 2+ incorrect login attempts.

R=nkostylev@chromium.org
BUG=360588

Review URL: https://codereview.chromium.org/266563002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@268509 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed