Sync web-platform-tests PR 14704 into mozilla-central (this bug is closed when the sync is complete). PR: https://github.com/web-platform-tests/wpt/pull/14704 Details from upstream follow. Adithya Srinivasan <adithyas@chromium.org> wrote: > Portals: Add window.portalHost > > Adds IDL files for PortalHost and window.portalHost, and has a simple > layout test for window.portalHost. > > Bug: 914117 > Change-Id: Iccaae8992e7cf2794a26e171cebffc94deca8e1d > > Reviewed-on: https://chromium-review.googlesource.com/1393438 > WPT-Export-Revision: 465545cbc697d007c2287868cb9dc98ba8f25aed

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=beefb8ed7a68094be0b21aa6e339fcbf1fd97474

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=bdfb8bdf11a8274f02fc242e0cd5f0c6431b4d18

Ran 1 tests and 1 subtests OK : 1 FAIL : 1 New tests that have failures or other problems: /portals/portals-host-null.html portals-host-null: FAIL

Pushed by james@hoppipolla.co.uk: https://hg.mozilla.org/integration/mozilla-inbound/rev/94035438b490 [wpt PR 14704] - Portals: Add window.portalHost, a=testonly https://hg.mozilla.org/integration/mozilla-inbound/rev/adf5057d8c98 [wpt PR 14704] - Update wpt metadata, a=testonly

Pushed by james@hoppipolla.co.uk: https://hg.mozilla.org/integration/mozilla-inbound/rev/6592ffbfa65c [wpt PR 14704] - Portals: Add window.portalHost, a=testonly https://hg.mozilla.org/integration/mozilla-inbound/rev/d2658b770ff0 [wpt PR 14704] - Update wpt metadata, a=testonly