[net/http auth] Split HttpAuthHandler creation from initialization.

net/http/http_auth_handler_ntlm.cc

Index: net/http/http_auth_handler_ntlm.cc
diff --git a/net/http/http_auth_handler_ntlm.cc b/net/http/http_auth_handler_ntlm.cc
index 378991fb82e0d646daa3361e0d54d8706a868632..c866598707f173ecd0e2f687ee8bc86f7c22a11a 100644
--- a/net/http/http_auth_handler_ntlm.cc
+++ b/net/http/http_auth_handler_ntlm.cc
@@ -22,7 +22,6 @@ HttpAuth::AuthorizationResult HttpAuthHandlerNTLM::HandleAnotherChallenge(
 }
 
 int HttpAuthHandlerNTLM::Init(const HttpAuthChallengeTokenizer& tok) {
-  auth_scheme_ = "ntlm";
   return ParseChallenge(tok, true) == HttpAuth::AUTHORIZATION_RESULT_ACCEPT
              ? OK
              : ERR_INVALID_RESPONSE;
@@ -102,6 +101,7 @@ int HttpAuthHandlerNTLM::GenerateAuthTokenImpl(
 HttpAuth::AuthorizationResult HttpAuthHandlerNTLM::ParseChallenge(
     const HttpAuthChallengeTokenizer& tok,
     bool initial_challenge) {
+  DCHECK(tok.SchemeIs("ntlm"));
 #if defined(NTLM_SSPI)
   // auth_sspi_ contains state for whether or not this is the initial challenge.
   return auth_sspi_.ParseChallenge(tok);
@@ -141,4 +141,14 @@ std::string HttpAuthHandlerNTLM::CreateSPN(const GURL& origin) {
   return target;
 }
 
+// None of the implementations support pre-emptive authentication for NTLM.
+scoped_ptr<HttpAuthHandler>
+HttpAuthHandlerNTLM::Factory::CreateAndInitPreemptiveAuthHandler(
+    HttpAuthCache::Entry* cache_entry,
+    const HttpAuthChallengeTokenizer& tokenizer,
+    HttpAuth::Target target,
+    const BoundNetLog& net_log) {
+  return scoped_ptr<HttpAuthHandler>();
+}
+
 }  // namespace net