Need to load the permissions lists every time at startup for notifications....

chrome/browser/notifications/notifications_prefs_cache.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_NOTIFICATIONS_NOTIFICATIONS_PREFS_CACHE_H
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATIONS_PREFS_CACHE_H
 
 #include <set>
 
 #include "base/ref_counted.h"
 #include "googleurl/src/gurl.h"
 
 class ListValue;
 
 // Class which caches notification preferences.
 // Construction occurs on the UI thread when the contents
 // of the profile preferences are initially cached.  Once constructed
 // this class should only be accessed on the IO thread.
 class NotificationsPrefsCache :
     public base::RefCountedThreadSafe<NotificationsPrefsCache> {
  public:
-  NotificationsPrefsCache(ListValue* allowed, ListValue* denied);
+  NotificationsPrefsCache(const ListValue* allowed, const ListValue* denied);
 
   // Checks to see if a given origin has permission to create desktop
   // notifications.  Returns a constant from WebNotificationPresenter
   // class.
   int HasPermission(const GURL& origin);
 
   // Updates the cache with a new origin allowed or denied.
   void CacheAllowedOrigin(const GURL& origin);
   void CacheDeniedOrigin(const GURL& origin);
 
  private:
   // Helper functions which read preferences.
   bool IsOriginAllowed(const GURL& origin);
   bool IsOriginDenied(const GURL& origin);
 
   // Storage of the actual preferences.
   std::set<GURL> allowed_origins_;
   std::set<GURL> denied_origins_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationsPrefsCache);
 };
 
 #endif  // #ifndef CHROME_BROWSER_NOTIFICATIONS_NOTIFICATIONS_PREFS_CACHE_H