Template methods on Timer classes instead of the classes themselves.

components/signin/core/browser/device_activity_fetcher.h

 // Copyright 2015 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 COMPONENTS_SIGNIN_CORE_BROWSER_DEVICE_ACTVITIY_FETCHER_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_DEVICE_ACTVITIY_FETCHER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 47 matching lines @@
   void StartFetchingGetTokenResponse();
   void StartFetchingListDevices();
 
   // Gaia fetcher used for acquiring an access token.
   scoped_ptr<GaiaAuthFetcher> gaia_auth_fetcher_;
   // URL Fetcher used for calling List Devices.
   scoped_ptr<net::URLFetcher> url_fetcher_;
 
   // If either fetcher fails, retry with exponential backoff.
   net::BackoffEntry fetcher_backoff_;
-  base::OneShotTimer<DeviceActivityFetcher> fetcher_timer_;
+  base::OneShotTimer fetcher_timer_;
   int fetcher_retries_;
 
   std::string access_token_;
   std::string login_hint_;
 
   SigninClient* signin_client_;  // Weak pointer.
   Observer* observer_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceActivityFetcher);
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_DEVICE_ACTVITIY_FETCHER_H_