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

net/http/http_auth_gssapi_posix.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_
 #define NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ skipping 226 matching lines @@
                  const gss_OID gss_oid);
   ~HttpAuthGSSAPI();
 
   bool Init();
 
   bool NeedsIdentity() const;
 
   bool AllowsExplicitCredentials() const;
 
   HttpAuth::AuthorizationResult ParseChallenge(
-      HttpAuthChallengeTokenizer* tok);
+      const HttpAuthChallengeTokenizer& tok);
 
   // Generates an authentication token.
   //
   // The return value is an error code. The authentication token will be
   // returned in |*auth_token|. If the result code is not |OK|, the value of
   // |*auth_token| is unspecified.
   //
   // If the operation cannot be completed synchronously, |ERR_IO_PENDING| will
   // be returned and the real result code will be passed to the completion
   // callback.  Otherwise the result code is returned immediately from this
@@ skipping 30 matching lines @@
   gss_OID gss_oid_;
   GSSAPILibrary* library_;
   std::string decoded_server_auth_token_;
   ScopedSecurityContext scoped_sec_context_;
   bool can_delegate_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_