Template methods on Timer classes instead of the classes themselves.

chrome/browser/extensions/activity_log/activity_database.h

 // Copyright (c) 2013 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_EXTENSIONS_ACTIVITY_LOG_ACTIVITY_DATABASE_H_
 #define CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_ACTIVITY_DATABASE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 170 matching lines @@
   sql::Connection* GetSqlConnection();
 
   // A reference a Delegate for policy-specific database behavior.  See the
   // top-level comment for ActivityDatabase for comments on cleanup.
   Delegate* delegate_;
 
   sql::Connection db_;
   bool valid_db_;
   bool batch_mode_;
   base::TimeDelta batching_period_;
-  base::RepeatingTimer<ActivityDatabase> timer_;
+  base::RepeatingTimer timer_;
   bool already_closed_;
   bool did_init_;
 
   friend class ActivityLogDatabasePolicy;
   FRIEND_TEST_ALL_PREFIXES(ActivityDatabaseTest, BatchModeOff);
   FRIEND_TEST_ALL_PREFIXES(ActivityDatabaseTest, BatchModeOn);
   FRIEND_TEST_ALL_PREFIXES(ActivityDatabaseTest, BatchModeFlush);
   DISALLOW_COPY_AND_ASSIGN(ActivityDatabase);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_ACTIVITY_DATABASE_H_