We have to do EV certificate verification for every resource

load.  The performance optimization of doing EV verification
for only main frames is incorrect with HTTP keep-alive connections.

R=eroman
BUG=41267
TEST=Visit https://www.paypal.com/.  Hit the Reload button
repeatedly.  The EV status should not disappear.
Review URL: http://codereview.chromium.org/3938001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@64813 0039d316-1c4b-4281-b951-d872f2087c98