Replace more ObserverList with base::ObserverList.

extensions/browser/api/networking_private/networking_private_linux.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_LINUX_H_
 #define EXTENSIONS_BROWSER_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_LINUX_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 239 matching lines @@
   base::Thread dbus_thread_;
   // DBus instance. Only access on |dbus_thread_|.
   scoped_refptr<dbus::Bus> dbus_;
   // Task runner used by the |dbus_| object.
   scoped_refptr<base::SequencedTaskRunner> dbus_task_runner_;
   // This is owned by |dbus_| object. Only access on |dbus_thread_|.
   dbus::ObjectProxy* network_manager_proxy_;
   // Holds the current mapping of known networks. Only access on |dbus_thread_|.
   scoped_ptr<NetworkMap> network_map_;
   // Observers to Network Events.
-  ObserverList<NetworkingPrivateDelegateObserver> network_events_observers_;
+  base::ObserverList<NetworkingPrivateDelegateObserver>
+      network_events_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkingPrivateLinux);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_LINUX_H_