Template methods on Timer classes instead of the classes themselves.

chrome/browser/metrics/perf/perf_provider_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_METRICS_PERF_PERF_PROVIDER_CHROMEOS_H_
 #define CHROME_BROWSER_METRICS_PERF_PERF_PROVIDER_CHROMEOS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 97 matching lines @@
   // long ago the session restore started. |num_tabs_restored| is the total
   // number of tabs being restored.
   void CollectPerfDataAfterSessionRestore(
       const base::TimeDelta& time_after_restore,
       int num_tabs_restored);
 
   // Vector of SampledProfile protobufs containing perf profiles.
   std::vector<SampledProfile> cached_perf_data_;
 
   // For scheduling collection of perf data.
-  base::OneShotTimer<PerfProvider> timer_;
+  base::OneShotTimer timer_;
 
   // For detecting when changes to the login state.
   LoginObserver login_observer_;
 
   // Record of the last login time.
   base::TimeTicks login_time_;
 
   // Record of the start of the upcoming profiling interval.
   base::TimeTicks next_profiling_interval_start_;
 
@@ skipping 10 matching lines @@
 
   // To pass around the "this" pointer across threads safely.
   base::WeakPtrFactory<PerfProvider> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PerfProvider);
 };
 
 }  // namespace metrics
 
 #endif  // CHROME_BROWSER_METRICS_PERF_PERF_PROVIDER_CHROMEOS_H_