Switching AudioInputDeviceManager from using AudioManager interface to AudioSystem one.

content/browser/renderer_host/media/media_devices_manager_unittest.cc

 // Copyright 2016 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/media_devices_manager.h"
 
 #include <memory>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 147 matching lines @@
   }
 
   // Must outlive MediaDevicesManager as ~MediaDevicesManager() verifies it's
   // running on the IO thread.
   TestBrowserThreadBundle thread_bundle_;
 
   std::unique_ptr<MediaDevicesManager> media_devices_manager_;
   scoped_refptr<VideoCaptureManager> video_capture_manager_;
   MockVideoCaptureDeviceFactory* video_capture_device_factory_;
   std::unique_ptr<MockAudioManager, media::AudioManagerDeleter> audio_manager_;
-  std::unique_ptr<media::AudioSystem> audio_system_;
+  media::AudioSystem::UniquePtr audio_system_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MediaDevicesManagerTest);
 };
 
 TEST_F(MediaDevicesManagerTest, EnumerateNoCacheAudioInput) {
   EXPECT_CALL(*audio_manager_, MockGetAudioInputDeviceNames(_))
       .Times(kNumCalls);
   EXPECT_CALL(*video_capture_device_factory_, MockGetDeviceDescriptors())
       .Times(0);
@@ skipping 390 matching lines @@
   media_devices_manager_->OnDevicesChanged(base::SystemMonitor::DEVTYPE_AUDIO);
   media_devices_manager_->OnDevicesChanged(
       base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE);
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(num_audio_input_devices, notification_all_audio_input.size());
   EXPECT_EQ(num_video_input_devices, notification_all_video_input.size());
   EXPECT_EQ(num_audio_output_devices, notification_all_audio_output.size());
 }
 
 }  // namespace content