Removes tracking for fake audio streams.

media/audio/fake_audio_input_stream.h

Index: media/audio/fake_audio_input_stream.h
diff --git a/media/audio/fake_audio_input_stream.h b/media/audio/fake_audio_input_stream.h
index 670b481609f768fd837c006efae10623f87d9957..c52b4f34777aa6129d38837e7fdadd73bbb6723b 100644
--- a/media/audio/fake_audio_input_stream.h
+++ b/media/audio/fake_audio_input_stream.h
@@ -19,7 +19,6 @@
 namespace media {
 
 class AudioBus;
-class AudioManagerBase;
 class SimpleSource;
 
 // This class acts as a fake audio input stream. The default is to generate a
@@ -30,7 +29,9 @@ class MEDIA_EXPORT FakeAudioInputStream
     : public AudioInputStream {
  public:
   static AudioInputStream* MakeFakeStream(
-      AudioManagerBase* manager, const AudioParameters& params);
+      const scoped_refptr<base::SingleThreadTaskRunner>& audio_task_runner,
+      const scoped_refptr<base::SingleThreadTaskRunner>& worker_task_runner,
+      const AudioParameters& params);
 
   bool Open() override;
   void Start(AudioInputCallback* callback) override;
@@ -56,17 +57,20 @@ class MEDIA_EXPORT FakeAudioInputStream
   static void BeepOnce();
 
  private:
-  FakeAudioInputStream(AudioManagerBase* manager,
-                       const AudioParameters& params);
+  FakeAudioInputStream(
+      const scoped_refptr<base::SingleThreadTaskRunner>& audio_task_runner,
+      const scoped_refptr<base::SingleThreadTaskRunner>& worker_task_runner,
+      const AudioParameters& params);
   ~FakeAudioInputStream() override;
 
   std::unique_ptr<AudioOutputStream::AudioSourceCallback> ChooseSource();
   void ReadAudioFromSource();
 
-  AudioManagerBase* audio_manager_;
   AudioInputCallback* callback_;
   FakeAudioWorker fake_audio_worker_;
-  AudioParameters params_;
+  const scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
+  const scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner_;
+  const AudioParameters params_;
 
   std::unique_ptr<AudioOutputStream::AudioSourceCallback> audio_source_;
   std::unique_ptr<media::AudioBus> audio_bus_;