Create HttpAuthController.

This packages up the auth state into a single class to enable a HttpProxyClientSocket class (which is needed for SSLClientSocketPool).

BUG=30357
TEST=existing unit tests

Review URL: http://codereview.chromium.org/2808020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@50647 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed