Replace more ObserverList with base::ObserverList.

components/storage_monitor/storage_monitor.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 COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_H_
 #define COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 152 matching lines @@
   friend class ReceiverImpl;
 
   // Key: device id.
   typedef std::map<std::string, StorageInfo> StorageMap;
 
   void ProcessAttach(const StorageInfo& storage);
   void ProcessDetach(const std::string& id);
 
   scoped_ptr<Receiver> receiver_;
 
-  scoped_refptr<ObserverListThreadSafe<RemovableStorageObserver> >
+  scoped_refptr<base::ObserverListThreadSafe<RemovableStorageObserver>>
       observer_list_;
 
   // Used to make sure we call initialize from the same thread as creation.
   base::ThreadChecker thread_checker_;
 
   bool initializing_;
   bool initialized_;
   std::vector<base::Closure> on_initialize_callbacks_;
 
   // For manipulating storage_map_ structure.
   mutable base::Lock storage_lock_;
 
   // Map of all known storage devices,including fixed and removable storages.
   StorageMap storage_map_;
 
   scoped_ptr<TransientDeviceIds> transient_device_ids_;
 };
 
 }  // namespace storage_monitor
 
 #endif  // COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_H_