Display DNS probe results.

chrome/common/net/net_error_tracker.h

-// Copyright (c) 2013 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_COMMON_NET_NET_ERROR_TRACKER_H_
-#define CHROME_COMMON_NET_NET_ERROR_TRACKER_H_
-
-#include "base/bind.h"
-
-class NetErrorTracker {
- public:
-  enum FrameType {
-    FRAME_SUB,
-    FRAME_MAIN
-  };
-
-  enum PageType {
-    PAGE_NORMAL,
-    PAGE_ERROR
-  };
-
-  enum ErrorType {
-    ERROR_OTHER,
-    ERROR_DNS
-  };
-
-  enum DnsErrorPageState {
-    DNS_ERROR_PAGE_NONE,
-    DNS_ERROR_PAGE_PENDING,
-    DNS_ERROR_PAGE_LOADED
-  };
-
-  typedef base::Callback<void(DnsErrorPageState state)> Callback;
-
-  explicit NetErrorTracker(const Callback& callback);
-  ~NetErrorTracker();
-
-  void OnStartProvisionalLoad(FrameType frame, PageType page);
-  void OnCommitProvisionalLoad(FrameType frame);
-  void OnFailProvisionalLoad(FrameType frame, ErrorType error);
-  void OnFinishLoad(FrameType frame);
-
- private:
-  enum LoadState {
-    LOAD_NONE,
-    LOAD_STARTED,
-    LOAD_COMMITTED,
-    LOAD_FAILED,
-    LOAD_FINISHED
-  };
-
-  void SetDnsErrorPageState(DnsErrorPageState state);
-
-  Callback callback_;
-
-  LoadState load_state_;
-  PageType load_type_;
-
-  ErrorType error_type_;
-
-  DnsErrorPageState dns_error_page_state_;
-
-  DISALLOW_COPY_AND_ASSIGN(NetErrorTracker);
-};
-
-#endif  // CHROME_COMMON_NET_NET_ERROR_TRACKER_H_