Template methods on Timer classes instead of the classes themselves.

net/dns/dns_config_service.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 NET_DNS_DNS_CONFIG_SERVICE_H_
 #define NET_DNS_DNS_CONFIG_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 186 matching lines @@
   // Set when |timer_| expires.
   bool last_sent_empty_;
 
   // Initialized and updated on Invalidate* call.
   base::TimeTicks last_invalidate_config_time_;
   base::TimeTicks last_invalidate_hosts_time_;
   // Initialized and updated when |timer_| expires.
   base::TimeTicks last_sent_empty_time_;
 
   // Started in Invalidate*, cleared in On*Read.
-  base::OneShotTimer<DnsConfigService> timer_;
+  base::OneShotTimer timer_;
 
   NameServerClassifier classifier_;
 
   DISALLOW_COPY_AND_ASSIGN(DnsConfigService);
 };
 
 }  // namespace net
 
 #endif  // NET_DNS_DNS_CONFIG_SERVICE_H_