Could you please provide a test case to reproduce the issue from test team end.

Ping cool.ninj (see #1)

You can verify the code using below test script. As explained in the bug, "event should be fired" is not logged on virtual machines. It works fine on normal physical machines.

var desktopMedia = ['screen', 'window'];
chrome.desktopCapture.chooseDesktopMedia(this.desktopMedia, (id) => {
	var constraints = {
                    "audio": false,
                    "video": { mandatory: { chromeMediaSource: 'desktop', chromeMediaSourceId: id} }
                };
	navigator.webkitGetUserMedia(constraints, (stream) => { var mediaRecorder = new MediaRecorder(stream); mediaRecorder.start(1000);mediaRecorder.ondataavailable = e => { console.log("event should be fired");};}, (error) => {});
});

Thank you for providing more feedback. Adding requester "tkonchada@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

cool.ninj@, have you verified the screen sharing works on the VM without mediasrecorder? If you play the mediastream on a <video> element, can you see it?

Ping cool.ninj re #5

cool.ninj@, ping re. #5.

Closing in lack of feedback.