Template methods on Timer classes instead of the classes themselves.

storage/browser/quota/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 STORAGE_BROWSER_QUOTA_STORAGE_MONITOR_H_
 #define STORAGE_BROWSER_QUOTA_STORAGE_MONITOR_H_
 
 #include <map>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 42 matching lines @@
     base::TimeDelta rate;
     bool requires_update;
 
     ObserverState();
   };
   typedef std::map<StorageObserver*, ObserverState> StorageObserverStateMap;
 
   void DispatchPendingEvent();
 
   StorageObserverStateMap observers_;
-  base::OneShotTimer<StorageObserverList> notification_timer_;
+  base::OneShotTimer notification_timer_;
   StorageObserver::Event pending_event_;
 
   friend class content::StorageMonitorTestBase;
 
   DISALLOW_COPY_AND_ASSIGN(StorageObserverList);
 };
 
 
 // Manages the storage observers of a common host. Caches the usage and quota of
 // the host to avoid accumulating for every change.
@@ skipping 97 matching lines @@
 
   QuotaManager* quota_manager_;
   StorageTypeObserversMap storage_type_observers_map_;
 
   DISALLOW_COPY_AND_ASSIGN(StorageMonitor);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_QUOTA_STORAGE_MONITOR_H_