Template methods on Timer classes instead of the classes themselves.

net/disk_cache/disk_cache_test_util.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_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
 #define NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 46 matching lines @@
   // Sets the number of callbacks that can be received so far.
   void ExpectCallbacks(int num_callbacks) {
     num_callbacks_ = num_callbacks;
     num_iterations_ = last_ = 0;
     completed_ = false;
   }
 
   // Called periodically to test if WaitUntilCacheIoFinished should return.
   void TimerExpired();
 
-  base::RepeatingTimer<MessageLoopHelper> timer_;
+  base::RepeatingTimer timer_;
   int num_callbacks_;
   int num_iterations_;
   int last_;
   bool completed_;
 
   // True if a callback was called/reused more than expected.
   bool callback_reused_error_;
   int callbacks_called_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageLoopHelper);
@@ skipping 17 matching lines @@
   int last_result() const { return last_result_; }
 
  private:
   MessageLoopHelper* helper_;
   int reuse_;
   int last_result_;
   DISALLOW_COPY_AND_ASSIGN(CallbackTest);
 };
 
 #endif  // NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_