Bug 1523562 [wpt PR 15085] - Update expected value for test_tests_affected_idlharness, a=testonly

Automatic update from web-platform-tests
Update expected value for test_tests_affected_idlharness

This uses the working copy so isn't really stable. We should make a fake idl file
to use in the test, or something, but for now unbreak master.

--

wpt-commits: fe50b07a051669d6545e629787358db6950a7644
wpt-pr: 15085

testing/web-platform/tests/tools/wpt/tests/test_wpt.py

@@ -357,7 +357,7 @@ def test_tests_affected_idlharness(capsys, manifest_dir):
         wpt.main(argv=["tests-affected", "--metadata", manifest_dir, "%s~..%s" % (commit, commit)])
     assert excinfo.value.code == 0
     out, err = capsys.readouterr()
-    assert "webrtc/idlharness.https.window.js\n" == out
+    assert "webrtc-stats/idlharness.window.js\nwebrtc/idlharness.https.window.js\n" == out
 
 
 @pytest.mark.slow  # this updates the manifest