Desktop Capture API: Pass Audio Selection Information To Javascript

chrome/common/extensions/docs/examples/api/desktopCapture/app.js

Index: chrome/common/extensions/docs/examples/api/desktopCapture/app.js
diff --git a/chrome/common/extensions/docs/examples/api/desktopCapture/app.js b/chrome/common/extensions/docs/examples/api/desktopCapture/app.js
index e7ae8bc3051d640acf5c5f4820cfe407b2aa6ac0..b6b658144dffc8481d604269d8cbd74c34222fe6 100644
--- a/chrome/common/extensions/docs/examples/api/desktopCapture/app.js
+++ b/chrome/common/extensions/docs/examples/api/desktopCapture/app.js
@@ -29,17 +29,25 @@ document.querySelector('#startFromBackgroundPage')
     });
 
 // Launch webkitGetUserMedia() based on selected media id.
-function onAccessApproved(id) {
+function onAccessApproved(id, options) {
   if (!id) {
     console.log('Access rejected.');
     return;
   }
 
-  navigator.webkitGetUserMedia({
-    audio:{
+  var audioConstraint = {
       mandatory: {
         chromeMediaSource: 'desktop',
-        chromeMediaSourceId: id} },
+        chromeMediaSourceId: id
+      }
+  };
+
+  console.log(options.canRequestAudioTrack);
+  if (!options.canRequestAudioTrack)
+    audioConstraint = false;
+
+  navigator.webkitGetUserMedia({
+    audio: audioConstraint,
     video: {
       mandatory: {
         chromeMediaSource: 'desktop',