[Mojo Video Capture] Switch to using Mojo structs in media/capture/mojo

services/video_capture/public/interfaces/device_factory.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 video_capture.mojom;
 
 import "media/capture/mojo/video_capture_types.mojom";
-import "services/video_capture/public/interfaces/device_descriptor.mojom";
 import "services/video_capture/public/interfaces/device.mojom";
-import "services/video_capture/public/interfaces/capture_settings.mojom";
 
 enum DeviceAccessResultCode {
   NOT_INITIALIZED,
   SUCCESS,
   ERROR_DEVICE_NOT_FOUND
 };
 
 // Enables access to a set of video capture devices.
-// Typical operation is to first call EnumerateDeviceDescriptors() to obtain
-// information about available devices. The |device_id| of the descriptors can
-// subsequently be used to either obtain the supported formats for a device
-// using GetSupportedFormats(), or to create an instance of
+// Typical operation is to first call GetDeviceInfos() to obtain
+// information about available devices. The |device_id| of the infos can
+// subsequently be used to create an instance of
 // video_capture.mojom.Device using CreateDevice().
-// The factory guarantees that no two device descriptors it returns use the
+// The factory guarantees that no two device infos it returns use the
 // same |device_id|.
 interface DeviceFactory {
-  EnumerateDeviceDescriptors()
-      => (array<DeviceDescriptor> descriptors);
-
-  GetSupportedFormats(string device_id)
-      => (array<I420CaptureFormat> supported_formats);
+  GetDeviceInfos()
+      => (array<media.mojom.VideoCaptureDeviceInfo> device_infos);
 
   // Provides exclusive access to the device identified by |device_id|.
   // The access is valid until either the message pipe associated with
   // |device_request| is closed by the client, or a subsequent call to
   // CreateDevice() is made. When a subsequent call is made while the
   // |device_request| from a previous call has not yet been closed, the service
   // "revokes" that previous |device_request| (by closing the connection) and
   // the exclusive access goes to the new |device_request|.
   // Note: This design avoids the issue of it not being clear how soon after a
   // |device_request| has been (asynchronously) discarded a subsequent call to
   // CreateDevice() would succeed if it were to deny access while still
   // in use.
   CreateDevice(string device_id, Device& device_request)
       => (DeviceAccessResultCode result_code);
 };