Audio output debug recording.

media/audio/pulse/pulse_output.h

Index: media/audio/pulse/pulse_output.h
diff --git a/media/audio/pulse/pulse_output.h b/media/audio/pulse/pulse_output.h
index 8e86b0461ecc3984b92d57df7032b9d7a765a42e..ee57f947bdebd4b67b2e2e4d5e7f4d876ae5c07c 100644
--- a/media/audio/pulse/pulse_output.h
+++ b/media/audio/pulse/pulse_output.h
@@ -35,6 +35,8 @@ struct pa_stream;
 struct pa_threaded_mainloop;
 
 namespace media {
+
+class AudioDebugRecordingHelper;
 class AudioManagerBase;
 
 class PulseAudioOutputStream : public AudioOutputStream {
@@ -52,6 +54,8 @@ class PulseAudioOutputStream : public AudioOutputStream {
   void Stop() override;
   void SetVolume(double volume) override;
   void GetVolume(double* volume) override;
+  void EnableDebugRecording(const base::FilePath& file_name) override;
+  void DisableDebugRecording() override;
 
  private:
   // Called by PulseAudio when |pa_stream_| change state.  If an unexpected
@@ -93,6 +97,9 @@ class PulseAudioOutputStream : public AudioOutputStream {
   // Container for retrieving data from AudioSourceCallback::OnMoreData().
   std::unique_ptr<AudioBus> audio_bus_;
 
+  // Used for audio debug recordings.
+  std::unique_ptr<AudioDebugRecordingHelper> debug_recording_helper_;
+
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(PulseAudioOutputStream);