Replace more ObserverList with base::ObserverList.

content/browser/service_worker/service_worker_version.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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 
 #include <map>
 #include <queue>
 #include <set>
@@ skipping 516 matching lines @@
   IDMap<StatusCallback, IDMapOwnPointer> push_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> geofencing_callbacks_;
   IDMap<CrossOriginConnectCallback, IDMapOwnPointer>
       cross_origin_connect_callbacks_;
 
   std::set<const ServiceWorkerURLRequestJob*> streaming_url_request_jobs_;
 
   std::map<std::string, ServiceWorkerProviderHost*> controllee_map_;
   // Will be null while shutting down.
   base::WeakPtr<ServiceWorkerContextCore> context_;
-  ObserverList<Listener> listeners_;
+  base::ObserverList<Listener> listeners_;
   ServiceWorkerScriptCacheMap script_cache_map_;
   base::OneShotTimer<ServiceWorkerVersion> update_timer_;
 
   // Starts running in StartWorker and continues until the worker is stopped.
   base::RepeatingTimer<ServiceWorkerVersion> timeout_timer_;
   // Holds the time the worker last started being considered idle.
   base::TimeTicks idle_time_;
   // Holds the time that the outstanding StartWorker() request started.
   base::TimeTicks start_time_;
 
@@ skipping 20 matching lines @@
   scoped_ptr<Metrics> metrics_;
 
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_