Bug 1540258 [wpt PR 15885] - Update interfaces/screen-capture.idl, a=testonly

Automatic update from web-platform-tests
Update interfaces/screen-capture.idl (#15885)

Source: https://github.com/tidoust/reffy-reports/blob/e0218fe/whatwg/idl/screen-capture.idl
Build: https://travis-ci.org/tidoust/reffy-reports/builds/506822321
--

wpt-commits: 51268474ce1a051209c0e57b5a0c06e49d578a83
wpt-pr: 15885

testing/web-platform/tests/interfaces/screen-capture.idl

@@ -16,12 +16,14 @@ partial dictionary MediaTrackSupportedConstraints {
              boolean displaySurface = true;
              boolean logicalSurface = true;
              boolean cursor = true;
+             boolean restrictOwnAudio = true;
 };
 
 partial dictionary MediaTrackConstraintSet {
              ConstrainDOMString displaySurface;
              ConstrainBoolean logicalSurface;
              ConstrainDOMString cursor;
+             ConstrainBoolean restrictOwnAudio;
 };
 
 partial dictionary MediaTrackSettings {