Switching AudioInputDeviceManager from using AudioManager interface to AudioSystem one.

media/audio/audio_system_impl_unittest.cc

 // Copyright 2017 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 "media/audio/audio_system_impl.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/task_runner_util.h"
 #include "base/threading/thread.h"
@@ skipping 107 matching lines @@
     // which means AudioSystem reply containing device parameters is already
     // queued on the main thread.
     event.RunAndWait();
     base::RunLoop().RunUntilIdle();
   }
 
   // Mocks to verify that AudioSystem replied with an expected callback.
   MOCK_METHOD0(AudioParametersReceived, void(void));
   MOCK_METHOD1(HasInputDevicesCallback, void(bool));
   MOCK_METHOD0(DeviceDescriptionsReceived, void(void));
+  MOCK_METHOD1(AssociatedOutputDeviceIDReceived, void(const std::string&));
 
  protected:
   base::MessageLoop message_loop_;
   base::ThreadChecker thread_checker_;
   bool use_audio_thread_;
   base::Thread audio_thread_;
   MockAudioManager::UniquePtr audio_manager_;
-  std::unique_ptr<media::AudioSystem> audio_system_;
+  AudioSystem::UniquePtr audio_system_;
   AudioParameters input_params_;
   AudioParameters output_params_;
   AudioParameters default_output_params_;
   AudioDeviceDescriptions input_device_descriptions_;
   AudioDeviceDescriptions output_device_descriptions_;
 };
 
 TEST_P(AudioSystemImplTest, GetInputStreamParameters) {
   EXPECT_CALL(*this, AudioParametersReceived());
   audio_system_->GetInputStreamParameters(
@@ skipping 115 matching lines @@
   EXPECT_EQ(2, static_cast<int>(output_device_descriptions_.size()));
   EXPECT_EQ(1, static_cast<int>(input_device_descriptions_.size()));
   EXPECT_CALL(*this, DeviceDescriptionsReceived());
   audio_system_->GetDeviceDescriptions(
       base::Bind(&AudioSystemImplTest::OnGetDeviceDescriptions,
                  base::Unretained(this), output_device_descriptions_),
       false);
   WaitForCallback();
 }
 
+TEST_P(AudioSystemImplTest, GetAssociatedOutputDeviceID) {
+  const std::string associated_id("associated_id");
+  audio_manager_->SetAssociatedOutputDeviceIDCallback(
+      base::Bind([](const std::string& result,
+                    const std::string&) -> std::string { return result; },
+                 associated_id));
+
+  EXPECT_CALL(*this, AssociatedOutputDeviceIDReceived(associated_id));
+
+  audio_system_->GetAssociatedOutputDeviceID(
+      std::string(),
+      base::Bind(&AudioSystemImplTest::AssociatedOutputDeviceIDReceived,
+                 base::Unretained(this)));
+  WaitForCallback();
+}
+
 INSTANTIATE_TEST_CASE_P(, AudioSystemImplTest, testing::Values(false, true));
 
 }  // namespace media