The new IP blacklist is also a full-hash list which has no host key.

BUG=176647

Review URL: https://codereview.chromium.org/56563002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232576 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232576