Template methods on Timer classes instead of the classes themselves.

chrome/browser/chromeos/upgrade_detector_chromeos.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 CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_
 #define CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
@@ skipping 33 matching lines @@
   // The function that sends out a notification (after a certain time has
   // elapsed) that lets the rest of the UI know we should start notifying the
   // user that a new version is available.
   void NotifyOnUpgrade();
 
   void OnChannelsReceived(const std::string& current_channel,
                           const std::string& target_channel);
 
   // After we detect an upgrade we start a recurring timer to see if enough time
   // has passed and we should start notifying the user.
-  base::RepeatingTimer<UpgradeDetectorChromeos> upgrade_notification_timer_;
+  base::RepeatingTimer upgrade_notification_timer_;
   bool initialized_;
   base::Time upgrade_detected_time_;
 
   scoped_ptr<ChannelsRequester> channels_requester_;
 
   base::WeakPtrFactory<UpgradeDetectorChromeos> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorChromeos);
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_