Replace more ObserverList with base::ObserverList.

device/nfc/nfc_peer_chromeos.h

 // Copyright 2013 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 DEVICE_NFC_NFC_PEER_CHROMEOS_H_
 #define DEVICE_NFC_NFC_PEER_CHROMEOS_H_
 
 #include <map>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 48 matching lines @@
   // Object path of the peer that we are currently tracking.
   dbus::ObjectPath object_path_;
 
   // A map containing the NDEF records that were received from the peer.
   NdefRecordMap records_;
 
   // Message instance that contains pointers to all created records.
   device::NfcNdefMessage message_;
 
   // List of observers interested in event notifications from us.
-  ObserverList<device::NfcPeer::Observer> observers_;
+  base::ObserverList<device::NfcPeer::Observer> observers_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<NfcPeerChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NfcPeerChromeOS);
 };
 
 }  // namespace chromeos
 
 #endif  // DEVICE_NFC_NFC_PEER_CHROMEOS_H_