[Mojo Video Capture] Hook up connection lost events

content/browser/renderer_host/media/video_capture_provider.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_BUILDABLE_VIDEO_CAPTURE_DEVICE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_BUILDABLE_VIDEO_CAPTURE_DEVICE_H_
 
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
@@ skipping 23 matching lines @@
 
   virtual ~VideoCaptureDeviceLauncher() {}
 
   // The passed-in |done_cb| must guarantee that the context relevant
   // during the asynchronous processing stays alive.
   virtual 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) = 0;
 
   virtual void AbortLaunch() = 0;
 };
 
 class LaunchedVideoCaptureDevice
     : public media::VideoFrameConsumerFeedbackObserver {
  public:
   // Device operation methods.
@@ skipping 30 matching lines @@
   virtual void GetDeviceInfosAsync(
       const GetDeviceInfosCallback& result_callback) = 0;
 
   virtual std::unique_ptr<VideoCaptureDeviceLauncher>
   CreateDeviceLauncher() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_BUILDABLE_VIDEO_CAPTURE_DEVICE_H_