Template methods on Timer classes instead of the classes themselves.

media/audio/agc_audio_stream.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 MEDIA_AUDIO_AGC_AUDIO_STREAM_H_
 #define MEDIA_AUDIO_AGC_AUDIO_STREAM_H_
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
@@ skipping 162 matching lines @@
       base::AutoLock auto_lock(lock_);
       normalized_volume_ = normalized_volume;
     }
   }
 
   // Ensures that this class is created and destroyed on the same thread.
   base::ThreadChecker thread_checker_;
 
   // Repeating timer which cancels itself when it goes out of scope.
   // Used to check the microphone volume periodically.
-  base::RepeatingTimer<AgcAudioStream<AudioInterface> > timer_;
+  base::RepeatingTimer timer_;
 
   // True when automatic gain control is enabled, false otherwise.
   bool agc_is_enabled_;
 
   // Stores the maximum volume which is used for normalization to a volume
   // range of [0.0, 1.0].
   double max_volume_;
 
   // Contains last result of internal call to GetVolume(). We save resources
   // by not querying the capture volume for each callback. Guarded by |lock_|.
   // The range is normalized to [0.0, 1.0].
   double normalized_volume_;
 
   // Protects |normalized_volume_| .
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(AgcAudioStream<AudioInterface>);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AGC_AUDIO_STREAM_H_