Revert of Pass task runners to AudioManager constructor.

media/mojo/services/test_mojo_media_client.h

Index: media/mojo/services/test_mojo_media_client.h
diff --git a/media/mojo/services/test_mojo_media_client.h b/media/mojo/services/test_mojo_media_client.h
index 5494e36569e0d156e70328d79ba1d112678b8628..8bf795cdbc3de5868b4c340707c6ffa489296505 100644
--- a/media/mojo/services/test_mojo_media_client.h
+++ b/media/mojo/services/test_mojo_media_client.h
@@ -9,7 +9,7 @@
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "media/audio/audio_manager.h"
+#include "media/audio/fake_audio_log_factory.h"
 #include "media/mojo/services/mojo_media_client.h"
 
 namespace media {
@@ -26,7 +26,6 @@
 
   // MojoMediaClient implementation.
   void Initialize() final;
-  void WillQuit() final;
   std::unique_ptr<RendererFactory> CreateRendererFactory(
       const scoped_refptr<MediaLog>& media_log) final;
   AudioRendererSink* CreateAudioRendererSink() final;
@@ -36,7 +35,7 @@
       shell::mojom::InterfaceProvider* /* interface_provider */) final;
 
  private:
-  ScopedAudioManagerPtr audio_manager_;
+  FakeAudioLogFactory fake_audio_log_factory_;
   std::unique_ptr<AudioHardwareConfig> audio_hardware_config_;
   scoped_refptr<AudioRendererSink> audio_renderer_sink_;
   std::unique_ptr<VideoRendererSink> video_renderer_sink_;