net: block an ANSSI intermediate CA.

BUG=326787
R=rsleevi@chromium.org

Review URL: https://codereview.chromium.org/109593002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239345 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239345