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

net/http/http_auth_handler_basic.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_AUTH_HANDLER_BASIC_H_
 #define NET_HTTP_HTTP_AUTH_HANDLER_BASIC_H_
 
 #include <string>
 
 #include "net/base/net_export.h"
 #include "net/http/http_auth_handler.h"
 #include "net/http/http_auth_handler_factory.h"
 
 namespace net {
 
 // Code for handling http basic authentication.
 class NET_EXPORT_PRIVATE HttpAuthHandlerBasic : public HttpAuthHandler {
  public:
   class NET_EXPORT_PRIVATE Factory : public HttpAuthHandlerFactory {
    public:
     Factory();
     ~Factory() override;
 
-    int CreateAuthHandler(const HttpAuthChallengeTokenizer& challenge,
-                          HttpAuth::Target target,
-                          const GURL& origin,
-                          CreateReason reason,
-                          int digest_nonce_count,
-                          const BoundNetLog& net_log,
-                          scoped_ptr<HttpAuthHandler>* handler) override;
+    // HttpAuthHandlerFactory
+    scoped_ptr<HttpAuthHandler> CreateAuthHandlerForScheme(
+        const std::string& scheme) override;
+    scoped_ptr<HttpAuthHandler> CreateAndInitPreemptiveAuthHandler(
+        HttpAuthCache::Entry* cache_entry,
+        const HttpAuthChallengeTokenizer& tokenizer,
+        HttpAuth::Target target,
+        const BoundNetLog& net_log) override;
   };
 
+  ~HttpAuthHandlerBasic() override {}
+
+  // HttpAuthHandler
   HttpAuth::AuthorizationResult HandleAnotherChallenge(
       const HttpAuthChallengeTokenizer& challenge) override;
 
  protected:
+  // HttpAuthHandler
   int Init(const HttpAuthChallengeTokenizer& challenge) override;
-
   int GenerateAuthTokenImpl(const AuthCredentials* credentials,
                             const HttpRequestInfo& request,
                             const CompletionCallback& callback,
                             std::string* auth_token) override;
 
  private:
-  ~HttpAuthHandlerBasic() override {}
-
+  HttpAuthHandlerBasic();
   int ParseChallenge(const HttpAuthChallengeTokenizer& challenge);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_AUTH_HANDLER_BASIC_H_