Fail QUIC requests for secure resources over insecure connections.

BUG=350533

Review URL: https://codereview.chromium.org/189513006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255850 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255850