[net/http auth] Cleanup. Method names, and constness.

net/http/http_auth_sspi_win.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // See "SSPI Sample Application" at
 // http://msdn.microsoft.com/en-us/library/aa918273.aspx
 
 #include "net/http/http_auth_sspi_win.h"
 
 #include "base/base64.h"
@@ skipping 264 matching lines @@
 }
 
 void HttpAuthSSPI::ResetSecurityContext() {
   if (SecIsValidHandle(&ctxt_)) {
     library_->DeleteSecurityContext(&ctxt_);
     SecInvalidateHandle(&ctxt_);
   }
 }
 
 HttpAuth::AuthorizationResult HttpAuthSSPI::ParseChallenge(
-    HttpAuthChallengeTokenizer* tok) {
+    const HttpAuthChallengeTokenizer& tok) {
   if (!SecIsValidHandle(&ctxt_)) {
-    return net::ParseFirstRoundChallenge(scheme_, tok);
+    return ParseFirstRoundChallenge(scheme_, tok);
   }
   std::string encoded_auth_token;
-  return net::ParseLaterRoundChallenge(scheme_, tok, &encoded_auth_token,
-                                       &decoded_server_auth_token_);
+  return ParseLaterRoundChallenge(scheme_, tok, &encoded_auth_token,
+                                  &decoded_server_auth_token_);
 }
 
 int HttpAuthSSPI::GenerateAuthToken(const AuthCredentials* credentials,
                                     const std::string& spn,
                                     std::string* auth_token,
                                     const CompletionCallback& /*callback*/) {
   // Initial challenge.
   if (!SecIsValidHandle(&cred_)) {
     int rv = OnFirstRound(credentials);
     if (rv != OK)
@@ skipping 153 matching lines @@
   int token_length = pkg_info->cbMaxToken;
   status = library->FreeContextBuffer(pkg_info);
   rv = MapFreeContextBufferStatusToError(status);
   if (rv != OK)
     return rv;
   *max_token_length = token_length;
   return OK;
 }
 
 }  // namespace net