Remove the old Web Notification code-path (Chromium)

content/renderer/active_notification_tracker.h

-// Copyright (c) 2012 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 CONTENT_RENDERER_ACTIVE_NOTIFICATION_TRACKER_H_
-#define CONTENT_RENDERER_ACTIVE_NOTIFICATION_TRACKER_H_
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/containers/hash_tables.h"
-#include "base/id_map.h"
-#include "content/common/content_export.h"
-#include "third_party/WebKit/public/web/WebNotification.h"
-
-namespace content {
-
-// 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 CONTENT_EXPORT ActiveNotificationTracker {
- public:
-  ActiveNotificationTracker();
-  ~ActiveNotificationTracker();
-
-  // Methods for tracking active notification objects.
-  int RegisterNotification(const blink::WebNotification& notification);
-  void UnregisterNotification(int id);
-  bool GetId(const blink::WebNotification& notification, int& id);
-  bool GetNotification(int id, blink::WebNotification* notification);
-
-  // Clears out all active notifications.  Useful on page navigation.
-  void Clear();
-
- private:
-  typedef std::map<blink::WebNotification, int> ReverseTable;
-
-  // Tracking maps for active notifications.
-  IDMap<blink::WebNotification> notification_table_;
-  ReverseTable reverse_notification_table_;
-
-  DISALLOW_COPY_AND_ASSIGN(ActiveNotificationTracker);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_ACTIVE_NOTIFICATION_TRACKER_H_