RefCounted types should not have public destructors, content/browser part 2

content/renderer/media/audio_input_device.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.
 
 // Low-latency audio capturing unit utilizing audio input stream provided
 // by browser process through IPC.
 //
 // Relationship of classes:
 //
 //  AudioInputController                 AudioInputDevice
@@ skipping 103 matching lines @@
     virtual void OnDeviceStopped() = 0;
 
    protected:
     virtual ~CaptureEventHandler() {}
   };
 
   // Methods called on main render thread -------------------------------------
   AudioInputDevice(const media::AudioParameters& params,
                    CaptureCallback* callback,
                    CaptureEventHandler* event_handler);
-  virtual ~AudioInputDevice();
 
   // Specify the |session_id| to query which device to use. This method is
   // asynchronous/non-blocking.
   // Start() will use the second sequence if this method is called before.
   void SetDevice(int session_id);
 
   // Starts audio capturing. This method is asynchronous/non-blocking.
   // TODO(henrika): add support for notification when recording has started.
   void Start();
 
@@ skipping 25 matching lines @@
   // Methods called on IO thread ----------------------------------------------
   // AudioInputMessageFilter::Delegate impl., called by AudioInputMessageFilter.
   virtual void OnStreamCreated(base::SharedMemoryHandle handle,
                                base::SyncSocket::Handle socket_handle,
                                uint32 length) OVERRIDE;
   virtual void OnVolume(double volume) OVERRIDE;
   virtual void OnStateChanged(AudioStreamState state) OVERRIDE;
   virtual void OnDeviceReady(const std::string& device_id) OVERRIDE;
 
  private:
+  friend class base::RefCountedThreadSafe<AudioInputDevice>;
+  virtual ~AudioInputDevice();
+
   // Methods called on IO thread ----------------------------------------------
   // The following methods are tasks posted on the IO thread that needs to
   // be executed on that thread. They interact with AudioInputMessageFilter and
   // sends IPC messages on that thread.
   void InitializeOnIOThread();
   void SetSessionIdOnIOThread(int session_id);
   void StartOnIOThread();
   void ShutDownOnIOThread();
   void SetVolumeOnIOThread(double volume);
   void SetAutomaticGainControlOnIOThread(bool enabled);
@@ skipping 37 matching lines @@
   // In order to avoid a race between OnStreamCreated and Stop(), we use this
   // guard to control stopping and starting the audio thread.
   base::Lock audio_thread_lock_;
   AudioDeviceThread audio_thread_;
   scoped_ptr<AudioInputDevice::AudioThreadCallback> audio_callback_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AudioInputDevice);
 };
 
 #endif  // CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_