Replace more ObserverList with base::ObserverList.

components/pairing/bluetooth_controller_pairing_controller.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 CHROMEOS_PAIRING_BLUETOOTH_CONTROLLER_PAIRING_FLOW_H_
 #define CHROMEOS_PAIRING_BLUETOOTH_CONTROLLER_PAIRING_FLOW_H_
 
 #include <set>
 
 #include "base/macros.h"
@@ skipping 95 matching lines @@
   scoped_ptr<device::BluetoothDiscoverySession> discovery_session_;
   scoped_refptr<device::BluetoothSocket> socket_;
   std::string controller_device_id_;
 
   std::string confirmation_code_;
   std::set<std::string> discovered_devices_;
 
   scoped_ptr<ProtoDecoder> proto_decoder_;
 
   base::ThreadChecker thread_checker_;
-  ObserverList<ControllerPairingController::Observer> observers_;
+  base::ObserverList<ControllerPairingController::Observer> observers_;
   base::WeakPtrFactory<BluetoothControllerPairingController> ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothControllerPairingController);
 };
 
 }  // namespace pairing_chromeos
 
 #endif  // CHROMEOS_PAIRING_BLUETOOTH_CONTROLLER_PAIRING_FLOW_H_