WPT import https://crrev.com/c/1180077 introduced new failures in external/wpt/css:

List of new failures:
external/wpt/css/css-scrollbars/scrollbar-width-keywords.html new failing tests: https://crrev.com/c/1180077/4/third_party/WebKit/LayoutTests/external/wpt/css/css-scrollbars/scrollbar-width-keywords-expected.txt
external/wpt/css/css-animations/KeyframeEffect-getKeyframes.tentative.html new failing tests: https://crrev.com/c/1180077/4/third_party/WebKit/LayoutTests/external/wpt/css/css-animations/KeyframeEffect-getKeyframes.tentative-expected.txt

This import contains upstream changes from 09dfd6ac13134a85e77db24d87574458e9e3c67e to 184575d501a8286aabb4f95f8db34926559b7d8b:
Reland cache.addAll() duplicate VARY header WPT tests.: https://github.com/web-platform-tests/wpt/commit/184575d501a8286aabb4f95f8db34926559b7d8b
[Background Fetch] Take remaining quota into account in Data Manager.: https://github.com/web-platform-tests/wpt/commit/30c8b6dbce59669ba443dabb87ba49cedfd62e83
Network Error Logging: Add web platform tests: https://github.com/web-platform-tests/wpt/commit/d0b86dfcab07829407425bad98287757818f96c5
Sync Mozilla tests as of https://hg.mozilla.org/mozilla-central/rev/131363332762842ba327166bdc361c6fffc4858f . (#12552): https://github.com/web-platform-tests/wpt/commit/24876e8716a7500c35225cac471875df51818f8e [affecting this directory]
[Layered API] Update async local storage implementation and tests: https://github.com/web-platform-tests/wpt/commit/0ca82a786fe09415e21f558d2d28421fa35cf0f5
HTML: document.open() and global variables (#10815): https://github.com/web-platform-tests/wpt/commit/70c15a6e508f7460e1584bc8b122ac2cc8f9d6ea
HTML: document.open() and the beforeunload event (#10778): https://github.com/web-platform-tests/wpt/commit/eafe4bdb65ced7352e953ec35c06c3afa3d8125b
HTML: document.open() and the unload events (#10773): https://github.com/web-platform-tests/wpt/commit/23c21d2e0e6a8035ddfab91e33c54103d859ffca
Introduced dictionary TrustedTypePolicyOptions: https://github.com/web-platform-tests/wpt/commit/fa06664dc85df3024762f5e082e05aa293f90d88
Update interfaces/web-nfc.idl (#12548): https://github.com/web-platform-tests/wpt/commit/b42c431b5a46de314af0d751d6809d85c4ca0864
[css-logical] Allow CSS logical shorthands to be serialized in inline and computed styles: https://github.com/web-platform-tests/wpt/commit/9c650fc212cdbba6ee0830a68d3af3e708e031de [affecting this directory]
Support CSSStyleValues in StylePropertyMap.set. (Reland): https://github.com/web-platform-tests/wpt/commit/b6f1c190818648dc0c33eb7ada54bf3f209fc938 [affecting this directory]
Fix cookie prefix tests.: https://github.com/web-platform-tests/wpt/commit/4205ee12965bea420482d4d08cbac00b44cbad90
part 8 - Add some basic tests for scrollbar-width.: https://github.com/web-platform-tests/wpt/commit/f8dbf20242b731668ad71599c1fefcdaf87f3781 [affecting this directory]
[wdspec] Add tests for POST commands which make use of a Null body.: https://github.com/web-platform-tests/wpt/commit/6d430e9d2dbc770f66c40e944928f5ec4f6cbccb
[wdspec] Create tests for Get Window Handle and Get Window Handles.: https://github.com/web-platform-tests/wpt/commit/e27c34b3acf89132571e1f8e308b2bbe365c9b98
Revert "Cache Storage: Check for duplicate entries in Cache.addAll().": https://github.com/web-platform-tests/wpt/commit/2dda7b8c10c7566fa6167a32b09c85d51baf2a85
Implement ignore-opens-during-unload counter in Document: https://github.com/web-platform-tests/wpt/commit/d44f0f56d5d7d5d4b9e50be0ad2c4331f81c7bf7
move convolver up-mixing test to wpt: https://github.com/web-platform-tests/wpt/commit/318f3c42e57db6006eb853ee02e67a9cd10bd526
Use timeout multiplier for Marionette-backed reftests.: https://github.com/web-platform-tests/wpt/commit/51028ca47eadb2b6788999a7867f20064c15a3a6
[css-grid] Distribution offset doesn't account for non-spanning items: https://github.com/web-platform-tests/wpt/commit/676265b89417b09c27d94a2a8538a88a34821e88 [affecting this directory]
Remove the Budget API tests (#12537): https://github.com/web-platform-tests/wpt/commit/d617cdbf1278785ebcfd949be18231b7fc0eebed
Revert "[css-properties-values-api] Support CSSStyleValues in StylePropertyMap.set.": https://github.com/web-platform-tests/wpt/commit/5e22f7526ccd18de75184a12dc835cc23d3ea0be [affecting this directory]
Re-enable the Background Fetch WPT tests: https://github.com/web-platform-tests/wpt/commit/f4cfe41feec71829ec58aa0bf8ef3b8bf489dc7f
Sync Mozilla tests as of https://hg.mozilla.org/mozilla-central/rev/4248cea4f9a1e5cb64c0d121ff248e11e003e9e2 . (#12534): https://github.com/web-platform-tests/wpt/commit/507d63bba2e1d3aee550f161498f396ff4ab6842 [affecting this directory]
[css-properties-values-api] Support CSSStyleValues in StylePropertyMap.set.: https://github.com/web-platform-tests/wpt/commit/218a15f938b8612bac6a74baa8cccdaf53d57221 [affecting this directory]
Merge pull request #10963 from Tavmjong/text-shape: https://github.com/web-platform-tests/wpt/commit/79d77b7a845d6a141feeb7f2f719fa121b34be89
Merge pull request #7633 from ondras/counter-calc: https://github.com/web-platform-tests/wpt/commit/c1b66fc2e065d2045d258111aa4d28f9395cdb8e
Sec-Metadata: Remove the 'target' attribute.: https://github.com/web-platform-tests/wpt/commit/7dbb4b66740563687a254b8e4cd8f36ac836d48f
fix test_request on python 3 (#11746): https://github.com/web-platform-tests/wpt/commit/97626140d4b76c19cfdecac32ca1ea456fe4b339
Added new Sec-Metadata Web Platform Tests.: https://github.com/web-platform-tests/wpt/commit/4d4c0434a6e9a318458ab424e9396f053a30bb71
[wptrunner] Implement `--null` in test lists (#12483): https://github.com/web-platform-tests/wpt/commit/c0a1bc68d7f463a0f7b8a318d3cdc2b56e2cc044
Modify expected state for test of window.event with nodes moving: https://github.com/web-platform-tests/wpt/commit/f62d0d3bde3ac78013082b982224693ba2c0b819
Fetch: tests for further CORS restrictions: https://github.com/web-platform-tests/wpt/commit/a70e655d979df85b59e977b61361c0d6d8bf2bf2
Use "auto" values for unspecified keyframe-specific composite operations: https://github.com/web-platform-tests/wpt/commit/2eaab8231e69a8b71af9b617aacd683e8711d17e [affecting this directory]
Add a test for constructing-form-data-set (#12517): https://github.com/web-platform-tests/wpt/commit/513f0dad8e143b6207db982c2c0ec8bc785e448e
Enable the "Content hint" attribute of MediaStreamTrack: https://github.com/web-platform-tests/wpt/commit/eb51da896316fc87bef0ad3f9984c3ca8e550c61
Modify expected state for test of window.event with listener from a different global: https://github.com/web-platform-tests/wpt/commit/27a88cc8a125d25e27fd9d49358b0dc8d445d103
[testdriver.js] Document and test `bless` method (#11840): https://github.com/web-platform-tests/wpt/commit/6a86d4a0632848f5049c6e9fcdd21f7ffb1d34c2
Merge ChooserService mojom interface into WebUsbService.: https://github.com/web-platform-tests/wpt/commit/2ac66c0e42ad6e3eca86592876347dad41a4997b
Fix lint errors.: https://github.com/web-platform-tests/wpt/commit/a72db057004a22fb92482d645f6a569562fdde93
Add basic text in a shape tests ('shape-inside', 'shape-subtract', 'shape-padding', 'shape-margin').: https://github.com/web-platform-tests/wpt/commit/c7a9ec36b4e42f5fce35209c54ae5f1eefd65a09
moved calc-counter tests, reintroduced older help links: https://github.com/web-platform-tests/wpt/commit/0e3643c5a0cb2c20775ea8e0128b3d6ed8de323c [affecting this directory]
fixed help links: https://github.com/web-platform-tests/wpt/commit/fccb9daef457372b1e37ba5a0e79f664c07733da [affecting this directory]
added a reftest for counter-calc tests: https://github.com/web-platform-tests/wpt/commit/2038e32c31cd8bd6b7a4774f31513cd843727d46 [affecting this directory]
css generated content: added test for counter-* calc() values: https://github.com/web-platform-tests/wpt/commit/ee5f31997f7c63c307b81706de9caa43c7b917ed [affecting this directory]