Migrate MediaDevices.enumerateDevices to Mojo

content/common/media/media_devices.mojom

+// 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.
+
+module mojom;
+
+import "url/mojo/origin.mojom";
+
+[Native]
+enum MediaDeviceType;
+
+[Native]
+struct MediaDeviceInfo;
+
+// This object lives in the browser and takes care processing device enumeration
+// requests. TODO(guidou): Add support for device-change notifications.

[hta - Chromium, 2016/09/30 08:38:12]

Style: TODO on separate line.

[Guido Urdaneta, 2016/10/07 17:07:13]

Done.

+interface MediaDevicesDispatcherHost {
+  // The reply always contains NUM_MEDIA_DEVICE_TYPES elements.
+  // Use MediaDeviceType values to index the result.

[hta - Chromium, 2016/09/30 08:38:12]

Would it be more correct to say "The result is indexed by device type, as
defined in <header>"? As it stands, it's not that easy to see what it points to.

[Guido Urdaneta, 2016/10/07 17:07:13]

Done.

+  EnumerateDevices(
+      bool request_audio_input, 
+      bool request_video_input, 
+      bool request_audio_output,
+      url.mojom.Origin security_origin) => (array<array<MediaDeviceInfo>> enumeration);
+};