[Mojo Video Capture] Hook up connection lost events

content/browser/renderer_host/media/in_process_video_capture_device_launcher.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_IN_PROCESS_VIDEO_CAPTURE_DEVICE_LAUNCHER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_IN_PROCESS_VIDEO_CAPTURE_DEVICE_LAUNCHER_H_
 
 #include "base/single_thread_task_runner.h"
 #include "content/browser/renderer_host/media/video_capture_controller.h"
 #include "content/browser/renderer_host/media/video_capture_provider.h"
@@ skipping 13 matching lines @@
  public:
   InProcessVideoCaptureDeviceLauncher(
       scoped_refptr<base::SingleThreadTaskRunner> device_task_runner,
       media::VideoCaptureSystem* video_capture_system);
   ~InProcessVideoCaptureDeviceLauncher() override;
 
   void LaunchDeviceAsync(const std::string& device_id,
                          MediaStreamType stream_type,
                          const media::VideoCaptureParams& params,
                          base::WeakPtr<media::VideoFrameReceiver> receiver,
+                         base::OnceClosure connection_lost_cb,
                          Callbacks* callbacks,
                          base::OnceClosure done_cb) override;
 
   void AbortLaunch() override;
 
  private:
   using ReceiveDeviceCallback =
       base::Callback<void(std::unique_ptr<media::VideoCaptureDevice> device)>;
 
   enum class State {
@@ skipping 29 matching lines @@
       ReceiveDeviceCallback result_callback);
 
   const scoped_refptr<base::SingleThreadTaskRunner> device_task_runner_;
   media::VideoCaptureSystem* const video_capture_system_;
   State state_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_IN_PROCESS_VIDEO_CAPTURE_DEVICE_LAUNCHER_H_