Respect cookies set in a 401 responses when restarting the http transaction.

There are two parts to this change:
(1) rebuild the request cookies before each transaction restart for
    authentication
(2) notify the URLRequestHttpJob of header completion before *each*
    transaction restart for authentication

By "each transaction" I mean the automatic restarts that don't require
user input, such as:
 - replying to the first step of NTLM
 - selecting identity embedded in URL
 - selecting identity in auth-cache

Needing to notify URLRequestHttpJob for these intermediate restarts is
a consequence of cookie store management being done outside of
HttpNetworkTransaction.

After updating the cookie store, URLRequestHttpJob now tests
|HttpTransaction::IsReadyToRestartForAuth()| to check whether the
notification was informational or an identity is actually needed.

R=wtc
BUG=6450
Review URL: http://codereview.chromium.org/51004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@12635 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 3 insertions, 0 deletions

diff --git a/net/http/http_auth.h b/net/http/http_auth.h
index 8f594e2..5557694 100644
--- a/net/http/http_auth.h
+++ b/net/http/http_auth.h
@@ -21,6 +21,9 @@ class HttpAuth {
    // Http authentication can be done the the proxy server, origin server,
    // or both. This enum tracks who the target is.
    enum Target {
+     AUTH_NONE = -1,
+     // We depend on the valid targets (!= AUTH_NONE) being usable as indexes
+     // in an array, so start from 0.
      AUTH_PROXY = 0,
      AUTH_SERVER = 1,
    };