WPT import https://crrev.com/c/1131689 introduced new failures in external/wpt/mediacapture-streams:

List of new failures:
external/wpt/mediacapture-streams/idlharness.window.html new failing tests: https://crrev.com/c/1131689/4/third_party/WebKit/LayoutTests/external/wpt/mediacapture-streams/idlharness.window-expected.txt

This import contains upstream changes from d332f12c8af648643c54082194c120ba654100a2 to 98848dff9fe765e3719484392fa27458f5a21c54:
[testharness.js] Report error for worker errors (#11400): https://github.com/web-platform-tests/wpt/commit/98848dff9fe765e3719484392fa27458f5a21c54
Update the webusb IDL file (#11890): https://github.com/web-platform-tests/wpt/commit/db9d66853f0efd055c1f2100d0d9d468049dd9a1
Verify that invalid selectors throw for empty elements: https://github.com/web-platform-tests/wpt/commit/553778eb487e687efc08ef81b77206c7b91dd930
Disallow font-relative units when resolving var() for font-size.: https://github.com/web-platform-tests/wpt/commit/a8bd7948236886b2dbce7456beb0406e7d2207a1
focusin/out should be composed, and mark chrome event target chain items as chrome: https://github.com/web-platform-tests/wpt/commit/c012e234e1884c541f291d561efc5e61ae28180e
Update the navigation-timing IDL file (#11855): https://github.com/web-platform-tests/wpt/commit/b195e9bf4c29b607132d33883077439506086f91
Update the mediacapture-streams IDL file (#11871): https://github.com/web-platform-tests/wpt/commit/e0b261f8c7c1b54b9bfcdc3627bf547d3c89dc9b [affecting this directory]
Use NotSupportedError instead of WakeLockTypeNotSupported (#11879): https://github.com/web-platform-tests/wpt/commit/d423033c8bc00a812698819d6fc22eb96c210d00
Suppress two lint warnings about overlapping file names.: https://github.com/web-platform-tests/wpt/commit/6a9b866f62dfbdd69d7080c3a5d29e27f15b6c5b
[wptrunner] Use host 127.0.0.1 Marionette executor to connect to Marionette.: https://github.com/web-platform-tests/wpt/commit/5f061e6517c334549b1d6a34163159784c620a0d