Revert of Pass task runners to AudioManager constructor.

content/browser/renderer_host/media/audio_renderer_host_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/media/audio_renderer_host.h"
 
 #include <stdint.h>
 
 #include <memory>
 
@@ skipping 169 matching lines @@
 
 void WaitForEnumeration(base::RunLoop* loop,
                         const AudioOutputDeviceEnumeration& e) {
   loop->Quit();
 }
 }  // namespace
 
 class AudioRendererHostTest : public testing::Test {
  public:
   AudioRendererHostTest() {
-    audio_manager_ = media::AudioManager::CreateForTesting(
-        base::ThreadTaskRunnerHandle::Get());
+    audio_manager_.reset(media::AudioManager::CreateForTesting());
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kUseFakeDeviceForMediaStream);
     media_stream_manager_.reset(new MediaStreamManager(audio_manager_.get()));
 
     // Enable caching to make enumerations run in a single thread
     media_stream_manager_->audio_output_device_enumerator()->SetCachePolicy(
         AudioOutputDeviceEnumerator::CACHE_POLICY_MANUAL_INVALIDATION);
     base::RunLoop().RunUntilIdle();
     base::RunLoop run_loop;
     media_stream_manager_->audio_output_device_enumerator()->Enumerate(
@@ skipping 120 matching lines @@
     audio_manager_->GetTaskRunner()->PostTask(
         FROM_HERE, media::BindToCurrentLoop(run_loop.QuitClosure()));
     run_loop.Run();
   }
 
  private:
   // MediaStreamManager uses a DestructionObserver, so it must outlive the
   // TestBrowserThreadBundle.
   std::unique_ptr<MediaStreamManager> media_stream_manager_;
   TestBrowserThreadBundle thread_bundle_;
-  media::ScopedAudioManagerPtr audio_manager_;
+  std::unique_ptr<media::AudioManager> audio_manager_;
   MockAudioMirroringManager mirroring_manager_;
   scoped_refptr<MockAudioRendererHost> host_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHostTest);
 };
 
 TEST_F(AudioRendererHostTest, CreateAndClose) {
   Create();
   Close();
 }
@@ skipping 64 matching lines @@
 }
 
 TEST_F(AudioRendererHostTest, CreateInvalidDevice) {
   Create(false, kInvalidDeviceId, url::Origin(GURL(kSecurityOrigin)));
   Close();
 }
 
 // TODO(hclam): Add tests for data conversation in low latency mode.
 
 }  // namespace content