Move a bunch of files from chrome\common to content\common.

chrome/common/desktop_notifications/active_notification_tracker.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_COMMON_DESKTOP_NOTIFICATIONS_ACTIVE_NOTIFICATION_TRACKER_H_
-#define CHROME_COMMON_DESKTOP_NOTIFICATIONS_ACTIVE_NOTIFICATION_TRACKER_H_
-#pragma once
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/id_map.h"
-#include "base/hash_tables.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebNotification.h"
-
-namespace WebKit {
-class WebNotificationPermissionCallback;
-}
-
-// This class manages the set of active Notification objects in either
-// a render or worker process.  This class should be accessed only on
-// the main thread.
-class ActiveNotificationTracker {
- public:
-  ActiveNotificationTracker();
-  ~ActiveNotificationTracker();
-
-  // Methods for tracking active notification objects.
-  int RegisterNotification(const WebKit::WebNotification& notification);
-  void UnregisterNotification(int id);
-  bool GetId(const WebKit::WebNotification& notification, int& id);
-  bool GetNotification(int id, WebKit::WebNotification* notification);
-
-  // Methods for tracking active permission requests.
-  int RegisterPermissionRequest(
-      WebKit::WebNotificationPermissionCallback* callback);
-  void OnPermissionRequestComplete(int id);
-  WebKit::WebNotificationPermissionCallback* GetCallback(int id);
-
-  // Clears out all active notifications.  Useful on page navigation.
-  void Clear();
-
-  // Detaches all active notifications from their presenter.  Necessary
-  // when the Presenter is destroyed.
-  void DetachAll();
-
- private:
-  typedef std::map<WebKit::WebNotification, int> ReverseTable;
-
-  // Tracking maps for active notifications and permission requests.
-  IDMap<WebKit::WebNotification> notification_table_;
-  ReverseTable reverse_notification_table_;
-  IDMap<WebKit::WebNotificationPermissionCallback> callback_table_;
-
-  DISALLOW_COPY_AND_ASSIGN(ActiveNotificationTracker);
-};
-
-#endif  // CHROME_COMMON_DESKTOP_NOTIFICATIONS_ACTIVE_NOTIFICATION_TRACKER_H_