Video Capture Mojo (1.4a.a): Add service configurator interface

services/video_capture/public/interfaces/video_capture_device.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 "services/video_capture/public/interfaces/video_capture_device_client.mojom";
-import "services/video_capture/public/interfaces/video_capture_format.mojom";
-
-enum ResolutionChangePolicy {
-  FIXED_RESOLUTION,
-  FIXED_ASPECT_RATIO,
-  ANY_WITHIN_LIMIT,
-};
-
-enum PowerLineFrequency {
-  DEFAULT,
-  HZ_50,
-  HZ_60
-};
-
-// Represents access to a video capture device available on the machine.
-// Note: Instead of offering an explicit Stop() method, the VideoCaptureDevice
-// is stopped automatically when the corresponding message pipe is closed.
-interface VideoCaptureDevice {
-  Start(VideoCaptureFormat requested_format,
-        ResolutionChangePolicy resolution_change_policy,
-        PowerLineFrequency power_line_frequency,
-        VideoCaptureDeviceClient client);
-};