Remove code for the old Web Notification permission-path.

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 blink {
-class WebNotificationPermissionCallback;
-}
-
 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);
 
-  // Methods for tracking active permission requests.
-  int RegisterPermissionRequest(
-      blink::WebNotificationPermissionCallback* callback);
-  void OnPermissionRequestComplete(int id);
-  blink::WebNotificationPermissionCallback* GetCallback(int id);
-
   // Clears out all active notifications.  Useful on page navigation.
   void Clear();
 
  private:
   typedef std::map<blink::WebNotification, int> ReverseTable;
 
-  // Tracking maps for active notifications and permission requests.
+  // Tracking maps for active notifications.
   IDMap<blink::WebNotification> notification_table_;
   ReverseTable reverse_notification_table_;
-  IDMap<blink::WebNotificationPermissionCallback> callback_table_;
 
   DISALLOW_COPY_AND_ASSIGN(ActiveNotificationTracker);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ACTIVE_NOTIFICATION_TRACKER_H_