Begin adding mutual authentication into the SessionManager::connect() call.

This CL mainly changes APIs and stubs out functionality needed to
actually create the correct auth token stanzas.

BUG=None
TEST=compiles.

Review URL: http://codereview.chromium.org/4941001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@67316 0039d316-1c4b-4281-b951-d872f2087c98
19 files changed