Cache the underlying OS certificate handle within the X509CertificateCache, rather than caching raw X509Certificate pointers.
TEST=X509CertificateTest.Cache, X509CertificateTest.Intermediates
BUG=32623, 47648, 49377, 68448, 70216, 77374, 78038
Review URL: http://codereview.chromium.org/2944008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@92977 0039d316-1c4b-4281-b951-d872f2087c98