Template methods on Timer classes instead of the classes themselves.

ash/system/chromeos/network/tray_network_state_observer.h

 // Copyright (c) 2012 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 ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_STATE_OBSERVER_H
 #define ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_STATE_OBSERVER_H
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 35 matching lines @@
 
   // Set to true when we should purge stale icons in the cache.
   bool purge_icons_;
 
   // Frequency at which to push NetworkStateChanged updates. This avoids
   // unnecessarily frequent UI updates (which can be expensive). We set this
   // to 0 for tests to eliminate timing variance.
   int update_frequency_;
 
   // Timer used to limit the frequency of NetworkStateChanged updates.
-  base::OneShotTimer<TrayNetworkStateObserver> timer_;
+  base::OneShotTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayNetworkStateObserver);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_STATE_OBSERVER_H