Add a new message id IDS_LOGIN_DIALOG_DESCRIPTION_NO_REALM,

      which is a variant of IDS_LOGIN_DIALOG_DESCRIPTION that
doesn't have a realm.  Some HTTP authentication schemes
such as NTLM don't have a realm.

In IDS_LOGIN_DIALOG_DESCRIPTION, changed the placeholder's
name from &quotTITLE&quot to &quotREALM&quot.

R=eroman,tony
BUG=6567,6824
Review URL: http://codereview.chromium.org/27117

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10324 0039d316-1c4b-4281-b951-d872f2087c98