Fix an edge case where certificate intermediates are missing on Windows

      R=wtc@chromium.org
BUG=91051, 49377, 89703, 89899
TEST=Visit an HTTPS site which can be cached, such as https://bugs.webkit.org. Revisit the site, ensuring the item is loaded from the cache. Viewing the certificate viewer should show the entire certificate chain.


Review URL: http://codereview.chromium.org/7457025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@94819 0039d316-1c4b-4281-b951-d872f2087c98