WPT import https://crrev.com/c/1038909 introduced new failures in external/wpt/css/css-ui:

List of new failures:
external/wpt/css/css-ui/parsing/outline-valid-optional.html new failing tests: https://crrev.com/c/1038909/4/third_party/WebKit/LayoutTests/external/wpt/css/css-ui/parsing/outline-valid-optional-expected.txt
external/wpt/css/css-ui/parsing/resize-invalid.html new failing tests: https://crrev.com/c/1038909/4/third_party/WebKit/LayoutTests/external/wpt/css/css-ui/parsing/resize-invalid-expected.txt
external/wpt/css/css-ui/parsing/outline-color-valid-optional.html new failing tests: https://crrev.com/c/1038909/4/third_party/WebKit/LayoutTests/external/wpt/css/css-ui/parsing/outline-color-valid-optional-expected.txt

This import contains upstream changes from a77f2be0145f9a1fceeab3cdf11071095d84704b to c83c53e0cc5ec8a7427c8039e772a3bbf1bb9f50:
Merge pull request #10700 from ewilligers/css-ui3-parsing: https://github.com/w3c/web-platform-tests/commit/c83c53e0cc5ec8a7427c8039e772a3bbf1bb9f50
Disable kerning in wpt/css/CSS2/floats-clear/floats-143.xht: https://github.com/w3c/web-platform-tests/commit/fe5aaaf49f48a36dd468213e00734725109d7b90 [affecting this directory]
Move AudioParam tests to WPT: https://github.com/w3c/web-platform-tests/commit/575c6d120e84e2dd1343bd42c95f7d6b2477c12a
Revert "Update mozrunner from 7.0.0 to 7.0.1" (#10739): https://github.com/w3c/web-platform-tests/commit/11181545aa1e4d3e1e2f00fbedb8d048af091e83
Supporting outline-color:invert is optional.: https://github.com/w3c/web-platform-tests/commit/7986d73321ca8d93a54fdfc572c8d3ea77baa4f3 [affecting this directory]
Parsing tests for CSS UI Level 3: https://github.com/w3c/web-platform-tests/commit/a3ba00f67dc02594700f9ec0902ccd59d6f702e3 [affecting this directory]