javascript - Desktop capture chrome plugin

Question

I was developing a chrome plugin in which captures desktop screen. I am using the sample plugin example given here... https://developer.chrome.com/extensions/samples#desktop-capture-example But in this example as we click the start button a dialog pop ups which asks the user which screen or window to share but I want to share my current screen what changes do I make in this code

// Copyright 2013 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.

function gotStream(stream) {
  console.log("Received local stream");
  var video = document.querySelector("video");
  video.src = URL.createObjectURL(stream);
  localstream = stream;
  stream.onended = function() { console.log("Ended"); };
}

function getUserMediaError() {
  console.log("getUserMedia() failed.");
}

function onAccessApproved(id) {
if (!id) {
  console.log("Access rejected.");
   return;
}
navigator.webkitGetUserMedia({
audio:false,
video: { mandatory: { chromeMediaSource: "desktop",
                        chromeMediaSourceId: id } }
  }, gotStream, getUserMediaError);
 }

 var pending_request_id = null;

 document.querySelector('#start').addEventListener('click', function(e) {
 pending_request_id = chrome.desktopCapture.chooseDesktopMedia(
 ["screen"], onAccessApproved); 
 });

document.querySelector('#cancel').addEventListener('click', function(e) {
 if (pending_request_id != null) {
 chrome.desktopCapture.cancelChooseDesktopMedia(pending_request_id);
}
});

what should be the value of the chromeMediaSourceId so that the default selection is the current screen;

basically i want to avoid this screen ..

Plz help... Regards

Answer 1

You can't do this. The manifest permission allows you to provide this feature but the user still has to select the screen and hit share.

Like others said, this is a security feature to prevent your extension from triggering this without informing the user.