Display DNS probe results.

chrome/browser/net/dns_probe_job.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 CHROME_BROWSER_NET_DNS_PROBE_JOB_H_
-#define CHROME_BROWSER_NET_DNS_PROBE_JOB_H_
-
-#include "base/basictypes.h"
-#include "base/bind.h"
-#include "base/memory/scoped_ptr.h"
-
-namespace net {
-class DnsClient;
-class NetLog;
-}
-
-namespace chrome_browser_net {
-
-// A job to probe the health of a DNS configuration.
-class DnsProbeJob {
- public:
-  enum Result {
-    SERVERS_UNKNOWN,
-    SERVERS_CORRECT,  // Server responds with correct answers.
-    SERVERS_INCORRECT,  // Server responds with success but incorrect answer.
-    // TODO(ttuttle): Do we want an "unreliable" result, for e.g. servers that
-    // lie about NXDOMAIN?
-    SERVERS_FAILING,  // Server responds with errors.
-    SERVERS_UNREACHABLE,  // Server doesn't respond (or never got our packets)
-    MAX_RESULT
-  };
-  typedef base::Callback<void(DnsProbeJob* job, Result result)> CallbackType;
-
-  virtual ~DnsProbeJob() { }
-
-  // Creates and starts a probe job.
-  //
-  // |dns_client| should be a DnsClient with the DnsConfig already set.
-  // |callback| will be called when the probe finishes, which may happen
-  // before the constructor returns (for example, if we can't create the DNS
-  // transactions).
-  static scoped_ptr<DnsProbeJob> CreateJob(
-      scoped_ptr<net::DnsClient> dns_client,
-      const CallbackType& callback,
-      net::NetLog* net_log);
-
- protected:
-  DnsProbeJob() { }
-
-  DISALLOW_COPY_AND_ASSIGN(DnsProbeJob);
-};
-
-}  // namespace chrome_browser_net
-
-#endif  // CHROME_BROWSER_NET_DNS_PROBE_JOB_H_