Template methods on Timer classes instead of the classes themselves.

base/files/important_file_writer.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 BASE_FILES_IMPORTANT_FILE_WRITER_H_
 #define BASE_FILES_IMPORTANT_FILE_WRITER_H_
 
 #include <string>
 
 #include "base/base_export.h"
@@ skipping 104 matching lines @@
   // Invoked once and then reset on the next successful write event.
   Closure on_next_successful_write_;
 
   // Path being written to.
   const FilePath path_;
 
   // TaskRunner for the thread on which file I/O can be done.
   const scoped_refptr<SequencedTaskRunner> task_runner_;
 
   // Timer used to schedule commit after ScheduleWrite.
-  OneShotTimer<ImportantFileWriter> timer_;
+  OneShotTimer timer_;
 
   // Serializer which will provide the data to be saved.
   DataSerializer* serializer_;
 
   // Time delta after which scheduled data will be written to disk.
   const TimeDelta commit_interval_;
 
   WeakPtrFactory<ImportantFileWriter> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ImportantFileWriter);
 };
 
 }  // namespace base
 
 #endif  // BASE_FILES_IMPORTANT_FILE_WRITER_H_