Basic implentation of the client auth UI

chrome/browser/ssl/ssl_client_auth_handler.h

+// Copyright (c) 2009 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 CHROME_BROWSER_SSL_SSL_CLIENT_AUTH_HANDLER_H
+#define CHROME_BROWSER_SSL_SSL_CLIENT_AUTH_HANDLER_H
+
+#include "base/basictypes.h"
+#include "base/ref_counted.h"
+#include "net/base/ssl_cert_request_info.h"
+
+namespace net {
+class X509Certificate;
+}
+class MessageLoop;
+class URLRequest;
+
+// This class handles the approval and selection of a certificate for SSL client
+// authentication by the user.
+// It is self-owned and deletes itself when the UI reports the user selection or
+// when the URLRequest is cancelled.
+class SSLClientAuthHandler : public base::RefCounted<SSLClientAuthHandler> {
+ public:
+  SSLClientAuthHandler(URLRequest* request,
+                       net::SSLCertRequestInfo* cert_request_info,
+                       MessageLoop* io_loop,
+                       MessageLoop* ui_loop);
+  ~SSLClientAuthHandler();
+
+  // Asks the user for a certificate and resumes the URL request with that

[wtc, 2009/06/26 23:03:52]

Nit: "for" => "to select" because we already found the certs
for the user, all he needs to do is to select one.

This is why I asked you to change "prompt" because it suggests
that the user needs to find a cert.

+  // certificate.
+  // Should only be called on the IO thread.
+  void SelectCertificate();
+
+  // Invoked when the request associated with this handler is cancelled.
+  // Should only be called on the IO thread.
+  void OnRequestCancelled();
+
+ private:
+  // Prompts the user for a cert.
+  // Called on the UI thread.
+  void AskUserForCertificate();

[wtc, 2009/06/26 23:03:52]

You can just name this DoSelectCertificate -- we seem to use
this naming convention a lot.

+
+  // Notifies that the user has selected a cert.
+  // Called on the IO thread.
+  void CertificateSelected(net::X509Certificate* cert);
+
+  // The URLRequest that triggered this client auth.
+  URLRequest* request_;
+
+  // The certs to choose from.
+  scoped_refptr<net::SSLCertRequestInfo> cert_request_info_;
+
+  MessageLoop* io_loop_;
+  MessageLoop* ui_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(SSLClientAuthHandler);
+};
+
+#endif  // CHROME_BROWSER_SSL_SSL_CLIENT_AUTH_HANDLER_H