Audio output debug recording.

media/audio/alsa/alsa_output.h

 // Copyright 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.
 //
 // Creates an output stream based on the ALSA PCM interface.
 //
 // On device write failure, the stream will move itself to an invalid state.
 // No more data will be pulled from the data source, or written to the device.
 // All calls to public API functions will either no-op themselves, or return an
 // error if possible.  Specifically, If the stream is in an error state, Open()
@@ skipping 66 matching lines @@
 
   ~AlsaPcmOutputStream() override;
 
   // Implementation of AudioOutputStream.
   bool Open() override;
   void Close() override;
   void Start(AudioSourceCallback* callback) override;
   void Stop() override;
   void SetVolume(double volume) override;
   void GetVolume(double* volume) override;
+  void EnableDebugRecording(const base::FilePath& file_name) override;
+  void DisableDebugRecording() override;
 
   void SetTickClockForTesting(std::unique_ptr<base::TickClock> tick_clock);
 
  private:
   friend class AlsaPcmOutputStreamTest;
   FRIEND_TEST_ALL_PREFIXES(AlsaPcmOutputStreamTest,
                            AutoSelectDevice_DeviceSelect);
   FRIEND_TEST_ALL_PREFIXES(AlsaPcmOutputStreamTest,
                            AutoSelectDevice_FallbackDevices);
   FRIEND_TEST_ALL_PREFIXES(AlsaPcmOutputStreamTest, AutoSelectDevice_HintFail);
@@ skipping 124 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(AlsaPcmOutputStream);
 };
 
 MEDIA_EXPORT std::ostream& operator<<(std::ostream& os,
                                       AlsaPcmOutputStream::InternalState);
 
 };  // namespace media
 
 #endif  // MEDIA_AUDIO_ALSA_ALSA_OUTPUT_H_