[Mojo Video Capture] Implement a VideoCaptureProvider using the Mojo service (part 1)

content/browser/renderer_host/media/mojo_service_video_capture_device_launcher.cc

+// 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 "content/browser/renderer_host/media/mojo_service_video_capture_device_launcher.h"
+
+namespace content {
+
+MojoServiceVideoCaptureDeviceLauncher::MojoServiceVideoCaptureDeviceLauncher(
+    video_capture::mojom::DeviceFactoryPtr* device_factory)
+    : device_factory_(device_factory) {}
+
+MojoServiceVideoCaptureDeviceLauncher::
+    ~MojoServiceVideoCaptureDeviceLauncher() {}
+
+void MojoServiceVideoCaptureDeviceLauncher::LaunchDeviceAsync(
+    const std::string& device_id,
+    MediaStreamType stream_type,
+    const media::VideoCaptureParams& params,
+    base::WeakPtr<media::VideoFrameReceiver> receiver,
+    Callbacks* callbacks,
+    base::OnceClosure done_cb) {
+  NOTIMPLEMENTED();
+}
+
+void MojoServiceVideoCaptureDeviceLauncher::AbortLaunch() {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace content