WPT import https://crrev.com/c/998543 introduced new failures in external/wpt/compat:

List of new failures:
[ Mac-mac10.12 ] external/wpt/compat/interfaces.any.html new failing tests: https://crrev.com/c/998543/4/third_party/WebKit/LayoutTests/platform/mac-mac10.12/external/wpt/compat/interfaces.any-expected.txt
[ Win ] external/wpt/compat/interfaces.any.html new failing tests: https://crrev.com/c/998543/4/third_party/WebKit/LayoutTests/platform/win/external/wpt/compat/interfaces.any-expected.txt
external/wpt/compat/interfaces.any.worker.html new failing tests: https://crrev.com/c/998543/4/third_party/WebKit/LayoutTests/external/wpt/compat/interfaces.any.worker-expected.txt

This import contains upstream changes from 4d1c1925e6c863b9365d7b8196f7b538378ffdb5 to 0cddb6844a669459eb30f0bcf175e16e38af2a54:
Add FileAPI idl file (#9753): https://github.com/w3c/web-platform-tests/commit/0cddb6844a669459eb30f0bcf175e16e38af2a54
Improve error message for exposure_set test: https://github.com/w3c/web-platform-tests/commit/6dd31359159f88202ef73da68c4ad2eef2a3bc99
WebNFC: Use [SecureContext] instead of manual check: https://github.com/w3c/web-platform-tests/commit/11740d8ae8381b28655ef3811a3fc8afd3a9ded1
Fix all lint errors in svg/import/*: https://github.com/w3c/web-platform-tests/commit/0fb0745ad0ebcb51e262f043115ff1fa5b26f876
Merge pull request #10344 from nox/var-gt-const: https://github.com/w3c/web-platform-tests/commit/b80da5dcd487fa46b68eb2ae2e3fcaac32c53427
Change a const in var in idlharness.js: https://github.com/w3c/web-platform-tests/commit/89daad32c029798b7203a36f21598fcba470e07d
Fix RTCPeerConnection-track-stats.https.html flake.: https://github.com/w3c/web-platform-tests/commit/603e2776a1663e0790db8887204d22547ddc90de
[css-typed-om] Add support for border properties.: https://github.com/w3c/web-platform-tests/commit/487c4a84856364cac109848f8dc3fd31117d6d69
Add intersection-observer/OWNERS (#9199): https://github.com/w3c/web-platform-tests/commit/f9817db6c83d563b17e6f15aaed5da09bfc6e009
[css-typed-om] Add support for background properties.: https://github.com/w3c/web-platform-tests/commit/ca70fddcd052c04b962cc86d1438e68fb2457594
Update the cssom IDL file (#9776): https://github.com/w3c/web-platform-tests/commit/d6a82fdd64dfb254756e8219450fc2fd6070ae49
Update the compat IDL file (#9765): https://github.com/w3c/web-platform-tests/commit/13effc35311c62c60df4c2f34fa62b70f3947934 [affecting this directory]
Update the budget-api IDL file (#9763): https://github.com/w3c/web-platform-tests/commit/67c2a8716f759462e96f384d3f207a5e1b8b3add
Update the BackgroundSync IDL file (#9751): https://github.com/w3c/web-platform-tests/commit/99b9072bdc9d9098f85f24745d855a18e69dd6c2
Add MISSING-LINK docs (#10332): https://github.com/w3c/web-platform-tests/commit/22be1efd8c7f880ac01849cdd0ecc4fc46fd7e63
bluetooth: web: test: Update char disconnect tests: https://github.com/w3c/web-platform-tests/commit/0b6eb5e6c347814c0f75b51b0e5bebcb513c2d14
Cookie Store: disallow '=' in cookies with empty names: https://github.com/w3c/web-platform-tests/commit/dac87dcf26778f497afbcd3706868b598be29564
Cookie Store: Consolidate WPT coverage for special prefixed cookies: https://github.com/w3c/web-platform-tests/commit/e54fa9b4190db1c98fd2fb87ff869ba7991b337c
bluetooth: SetNextUnsubscribeFromNotifications: https://github.com/w3c/web-platform-tests/commit/15428c11650245510eaa51a6ea596db90c767487
Bind StashServer to server_host instead of browser_host: https://github.com/w3c/web-platform-tests/commit/d00f7bab7aecadbc2fc9a47172d090b4ba7e2ef2
Fix the unit test for affected tests (#10335): https://github.com/w3c/web-platform-tests/commit/5ee2ebcc1afd2103924629a7c13a101e4021308a
WebBluetooth: Use [SecureContext] instead of manual check: https://github.com/w3c/web-platform-tests/commit/1fd16dee074adde95d77be1ea78eb79192bfc440