Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/background/connection_notifier.h

-// Copyright 2016 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 COMPONENTS_OFFLINE_PAGES_BACKGROUND_CONNECTION_NOTIFIER_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_CONNECTION_NOTIFIER_H_
-
-#include "base/callback.h"
-#include "net/base/network_change_notifier.h"
-
-namespace offline_pages {
-
-class ConnectionNotifier
-    : public net::NetworkChangeNotifier::ConnectionTypeObserver {
- public:
-  // Callback to call when we become connected.
-  typedef base::Callback<void()> ConnectedCallback;
-
-  ConnectionNotifier(const ConnectionNotifier::ConnectedCallback& callback);
-  ~ConnectionNotifier() override;
-
-  // net::NetworkChangeNotifier::ConnectionTypeObserver implementation.
-  void OnConnectionTypeChanged(
-      net::NetworkChangeNotifier::ConnectionType type) override;
-
- private:
-  base::Callback<void()> callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(ConnectionNotifier);
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_CONNECTION_NOTIFIER_H_