chromium/chrome/browser/net/net_error_tab_helper.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_NET_NET_ERROR_TAB_HELPER_H_
#define CHROME_BROWSER_NET_NET_ERROR_TAB_HELPER_H_

#include <memory>
#include <string>

#include "base/functional/bind.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/net/dns_probe_service.h"
#include "chrome/common/net/net_error_page_support.mojom.h"
#include "chrome/common/network_diagnostics.mojom.h"
#include "chrome/common/network_easter_egg.mojom.h"
#include "components/error_page/common/net_error_info.h"
#include "components/offline_pages/buildflags/buildflags.h"
#include "components/prefs/pref_member.h"
#include "content/public/browser/reload_type.h"
#include "content/public/browser/render_frame_host_receiver_set.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"

namespace user_prefs {
class PrefRegistrySyncable;
}  // namespace user_prefs

namespace chrome_browser_net {

// A TabHelper that monitors loads for certain types of network errors and
// does interesting things with them.  Currently, starts DNS probes using the
// DnsProbeService whenever a page fails to load with a DNS-related error.
class NetErrorTabHelper
    : public content::WebContentsObserver,
      public content::WebContentsUserData<NetErrorTabHelper>,
      public chrome::mojom::NetErrorPageSupport,
      public chrome::mojom::NetworkDiagnostics,
      public chrome::mojom::NetworkEasterEgg { … };

}  // namespace chrome_browser_net

#endif  // CHROME_BROWSER_NET_NET_ERROR_TAB_HELPER_H_