[Mojo Video Capture] Hook up connection lost events

content/browser/renderer_host/media/service_launched_video_capture_device.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/service_launched_video_capture_device.h"
 
 namespace content {
 
 ServiceLaunchedVideoCaptureDevice::ServiceLaunchedVideoCaptureDevice(
-    video_capture::mojom::DevicePtr device)
-    : device_(std::move(device)) {
+    video_capture::mojom::DevicePtr device,
+    base::OnceClosure connection_lost_cb)
+    : device_(std::move(device)),
+      connection_lost_cb_(std::move(connection_lost_cb)) {
   // Unretained |this| is safe, because |this| owns |device_|.
   device_.set_connection_error_handler(
       base::Bind(&ServiceLaunchedVideoCaptureDevice::OnLostConnectionToDevice,
                  base::Unretained(this)));
 }
 
 ServiceLaunchedVideoCaptureDevice::~ServiceLaunchedVideoCaptureDevice() {
   DCHECK(sequence_checker_.CalledOnValidSequence());
 }
 
@@ skipping 42 matching lines @@
 
 void ServiceLaunchedVideoCaptureDevice::OnUtilizationReport(
     int frame_feedback_id,
     double utilization) {
   DCHECK(sequence_checker_.CalledOnValidSequence());
   device_->OnReceiverReportingUtilization(frame_feedback_id, utilization);
 }
 
 void ServiceLaunchedVideoCaptureDevice::OnLostConnectionToDevice() {
   DCHECK(sequence_checker_.CalledOnValidSequence());
-  NOTIMPLEMENTED();
+  base::ResetAndReturn(&connection_lost_cb_).Run();
 }
 
 }  // namespace content