[Mojo Video Capture] Introduce abstraction VideoCaptureSystem

media/capture/video/video_capture_device_info.cc

Index: media/capture/video/video_capture_device_info.cc
diff --git a/media/capture/video/video_capture_device_info.cc b/media/capture/video/video_capture_device_info.cc
new file mode 100644
index 0000000000000000000000000000000000000000..50f999ba20df9d9244418ae140cbfcb8f0c7c0fd
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+++ b/media/capture/video/video_capture_device_info.cc
@@ -0,0 +1,23 @@
+// 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/capture/video/video_capture_device_info.h"
+
+namespace media {
+
+VideoCaptureDeviceInfo::VideoCaptureDeviceInfo() = default;
+
+VideoCaptureDeviceInfo::VideoCaptureDeviceInfo(
+    media::VideoCaptureDeviceDescriptor descriptor)
+    : descriptor(descriptor) {}
+
+VideoCaptureDeviceInfo::VideoCaptureDeviceInfo(
+    const VideoCaptureDeviceInfo& other) = default;
+
+VideoCaptureDeviceInfo::~VideoCaptureDeviceInfo() = default;
+
+VideoCaptureDeviceInfo& VideoCaptureDeviceInfo::operator=(
+    const VideoCaptureDeviceInfo& other) = default;
+
+}  // namespace media