Revert of Pass task runners to AudioManager constructor.

media/mojo/services/test_mojo_media_client.h

 // Copyright 2014 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.
 
 #ifndef MEDIA_MOJO_SERVICES_TEST_MOJO_MEDIA_CLIENT_H_
 #define MEDIA_MOJO_SERVICES_TEST_MOJO_MEDIA_CLIENT_H_
 
 #include <memory>
 
 #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 {
 
 class AudioHardwareConfig;
 class AudioRendererSink;
 class VideoRendererSink;
 
 // Default MojoMediaClient for MojoMediaApplication.
 class TestMojoMediaClient : public MojoMediaClient {
  public:
   TestMojoMediaClient();
   ~TestMojoMediaClient() final;
 
   // MojoMediaClient implementation.
   void Initialize() final;
-  void WillQuit() final;
   std::unique_ptr<RendererFactory> CreateRendererFactory(
       const scoped_refptr<MediaLog>& media_log) final;
   AudioRendererSink* CreateAudioRendererSink() final;
   VideoRendererSink* CreateVideoRendererSink(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) final;
   std::unique_ptr<CdmFactory> CreateCdmFactory(
       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_;
 
   DISALLOW_COPY_AND_ASSIGN(TestMojoMediaClient);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_TEST_MOJO_MEDIA_CLIENT_H_