Replace more ObserverList with base::ObserverList.

content/renderer/p2p/socket_dispatcher.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.
 
 // P2PSocketDispatcher is a per-renderer object that dispatchers all
 // P2P messages received from the browser and relays all P2P messages
 // sent to the browser. P2PSocketClient instances register themselves
 // with the dispatcher using RegisterClient() and UnregisterClient().
 //
 // Relationship of classes.
@@ skipping 91 matching lines @@
                       const base::TimeTicks& timestamp);
 
   P2PSocketClientImpl* GetClient(int socket_id);
 
   scoped_refptr<base::SingleThreadTaskRunner> ipc_task_runner_;
   IDMap<P2PSocketClientImpl> clients_;
 
   IDMap<P2PAsyncAddressResolver> host_address_requests_;
 
   bool network_notifications_started_;
-  scoped_refptr<ObserverListThreadSafe<NetworkListObserver> >
+  scoped_refptr<base::ObserverListThreadSafe<NetworkListObserver>>
       network_list_observers_;
 
   IPC::Sender* sender_;
 
   DISALLOW_COPY_AND_ASSIGN(P2PSocketDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_P2P_SOCKET_DISPATCHER_H_