Revert of Pass task runners to AudioManager constructor.

media/audio/fake_audio_manager.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.
 
 #ifndef MEDIA_AUDIO_FAKE_AUDIO_MANAGER_H_
 #define MEDIA_AUDIO_FAKE_AUDIO_MANAGER_H_
 
 #include <string>
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "media/audio/audio_manager_base.h"
 #include "media/audio/fake_audio_input_stream.h"
 #include "media/audio/fake_audio_output_stream.h"
 
 namespace media {
 
 class MEDIA_EXPORT FakeAudioManager : public AudioManagerBase {
  public:
-  FakeAudioManager(
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner,
-      AudioLogFactory* audio_log_factory);
+  FakeAudioManager(AudioLogFactory* audio_log_factory);
 
   // Implementation of AudioManager.
   bool HasAudioOutputDevices() override;
   bool HasAudioInputDevices() override;
 
   // Implementation of AudioManagerBase.
   AudioOutputStream* MakeLinearOutputStream(
       const AudioParameters& params) override;
   AudioOutputStream* MakeLowLatencyOutputStream(
       const AudioParameters& params,
@@ skipping 14 matching lines @@
       const std::string& output_device_id,
       const AudioParameters& input_params) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FakeAudioManager);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_FAKE_AUDIO_MANAGER_H_