Remove HttpAuth::Scheme enum in favor of a string.

net/http/http_auth_handler_digest.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.
 
 #include "net/http/http_auth_handler_digest.h"
 
 #include <string>
 
 #include "base/i18n/icu_string_conversions.h"
 #include "base/logging.h"
@@ skipping 168 matching lines @@
 //
 // Note that according to RFC 2617 (section 1.2) the realm is required.
 // However we allow it to be omitted, in which case it will default to the
 // empty string.
 //
 // This allowance is for better compatibility with webservers that fail to
 // send the realm (See http://crbug.com/20984 for an instance where a
 // webserver was not sending the realm with a BASIC challenge).
 bool HttpAuthHandlerDigest::ParseChallenge(
     HttpAuth::ChallengeTokenizer* challenge) {
-  auth_scheme_ = HttpAuth::AUTH_SCHEME_DIGEST;
+  auth_scheme_ = "digest";
   score_ = 2;
   properties_ = ENCRYPTS_IDENTITY;
 
   // Initialize to defaults.
   stale_ = false;
   algorithm_ = ALGORITHM_UNSPECIFIED;
   qop_ = QOP_UNSPECIFIED;
   realm_ = original_realm_ = nonce_ = domain_ = opaque_ = std::string();
 
   // FAIL -- Couldn't match auth-scheme.
@@ skipping 171 matching lines @@
     // TODO(eroman): Supposedly IIS server requires quotes surrounding qop.
     authorization += ", qop=" + QopToString(qop_);
     authorization += ", nc=" + nc;
     authorization += ", cnonce=" + HttpUtil::Quote(cnonce);
   }
 
   return authorization;
 }
 
 }  // namespace net