Moved XMPP notifier library from chrome/browser/sync to chrome/common....

chrome/browser/sync/notifier/base/network_status_detector_task.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_SYNC_NOTIFIER_BASE_NETWORK_STATUS_DETECTOR_TASK_H_
-#define CHROME_BROWSER_SYNC_NOTIFIER_BASE_NETWORK_STATUS_DETECTOR_TASK_H_
-
-#include "chrome/browser/sync/notifier/base/time.h"
-#include "talk/base/sigslot.h"
-#include "talk/base/task.h"
-
-namespace notifier {
-
-class AsyncNetworkAlive;
-
-// Detects the current network state and any changes to that.
-class NetworkStatusDetectorTask : public talk_base::Task,
-                                  public sigslot::has_slots<> {
- public:
-  // Create an instance of (a subclass of) this class.
-  static NetworkStatusDetectorTask* Create(talk_base::Task* parent);
-
-  // Determines the current network state and then calls
-  // SignalNetworkStateDetected.
-  void DetectNetworkState();
-
-  // Fires whenever the network state is detected.
-  //   SignalNetworkStateDetected(was_alive, is_alive);
-  sigslot::signal2<bool, bool> SignalNetworkStateDetected;
-
- protected:
-  explicit NetworkStatusDetectorTask(talk_base::Task* parent)
-    : talk_base::Task(parent),
-      initial_detection_done_(false),
-      is_alive_(false) {
-  }
-
-  virtual ~NetworkStatusDetectorTask() { }
-
-  virtual int ProcessStart() = 0;
-
-  // Stay around until aborted.
-  virtual int ProcessResponse() {
-    return STATE_BLOCKED;
-  }
-
-  void SetNetworkAlive(bool is_alive);
-
- private:
-  bool initial_detection_done_;
-  bool is_alive_;
-
-  DISALLOW_COPY_AND_ASSIGN(NetworkStatusDetectorTask);
-};
-
-}  // namespace notifier
-
-#endif  // CHROME_BROWSER_SYNC_NOTIFIER_BASE_NETWORK_STATUS_DETECTOR_TASK_H_