Use LOAD_VERIFY_EV_CERT to verify EV-ness in Verify().

If LOAD_VERIFY_EV_CERT is requested on load_flags
and revokation checking is performed, Verify() peforms
EV certificate verification as well, and sets
CERT_STATUS_IS_EV in verify_result.

Eliminate X509Certificate::IsEV()

BUG=3592
TEST=net_unittests with ALLOW_EXTERNAL_ACCESS=1, \
 visit https://www.thawte.com/ and shows EV info.

Review URL: http://codereview.chromium.org/125120

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@19011 0039d316-1c4b-4281-b951-d872f2087c98
12 files changed