Implement the backend of SSL client authentication for
Windows.

Create Schannel SSPI CredHandles with certificates for
SSL client authentication.

Remember the client certificates that the user selected
so that we don't ask the user again and again.

R=rvargas,eroman
BUG=http://crbug.com/318
TEST=none
Review URL: http://codereview.chromium.org/131086

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@18841 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed