net: roll NSS.

Brings in the following changes:

commit 87b96db4268293187d7cf741907a6d5d1d8080e0
Author: agl@chromium.org <agl@chromium.org>
Date:   Thu Sep 25 20:28:09 2014 +0000

    Update to NSS 3.16.7.

    This contains a fix for the RSA signature forgery bug (CVE-2014-1568):
    https://www.mozilla.org/security/announce/2014/mfsa2014-73.html

    Chrome and ChromeOS have already released updates containing this fix:
      http://googlechromereleases.blogspot.com/2014/09/stable-channel-update_24.html
      http://googlechromereleases.blogspot.com/2014/09/stable-channel-update-for-chrome-os_24.html

    https://codereview.appspot.com/142600043/

    (This the SVN version of the git change, referenced above. It seems that the
    NSS git is still a mirror from this SVN repo and thus one cannot commit to it
    directly.)

    git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/nss@292145 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

BUG=414124

Review URL: https://codereview.chromium.org/603153004

Cr-Commit-Position: refs/heads/master@{#296814}
1 file changed