Removing public access to AudioManager device info interface.

media/audio/audio_device_info_accessor_for_tests.h

+// 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.
+
+#ifndef MEDIA_AUDIO_AUDIO_DEVICE_INFO_ACCESSOR_FOR_TESTS_H_
+#define MEDIA_AUDIO_AUDIO_DEVICE_INFO_ACCESSOR_FOR_TESTS_H_
+
+#include <string>
+
+#include "media/audio/audio_device_description.h"
+#include "media/base/audio_parameters.h"
+
+namespace media {
+
+class AudioManager;
+
+// Accessor for protected device info-related AudioManager. To be used in media
+// unit tests only.
+class MEDIA_EXPORT AudioDeviceInfoAccessorForTests {

[Max Morin, 2017/04/11 07:27:08]

I still think having a bunch of friends would be easier than introducing this
class, but if it's fine by Dale it's ok.

+ public:
+  explicit AudioDeviceInfoAccessorForTests(AudioManager* audio_manager);
+
+  bool HasAudioOutputDevices();
+
+  bool HasAudioInputDevices();
+
+  void GetAudioInputDeviceDescriptions(
+      AudioDeviceDescriptions* device_descriptions);
+
+  void GetAudioOutputDeviceDescriptions(
+      AudioDeviceDescriptions* device_descriptions);
+
+  AudioParameters GetDefaultOutputStreamParameters();
+
+  AudioParameters GetOutputStreamParameters(const std::string& device_id);
+
+  AudioParameters GetInputStreamParameters(const std::string& device_id);
+
+  std::string GetAssociatedOutputDeviceID(const std::string& input_device_id);
+
+ private:
+  AudioManager* const audio_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioDeviceInfoAccessorForTests);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_AUDIO_AUDIO_DEVICE_INFO_ACCESSOR_FOR_TESTS_H_