Import wpt@6ca4128c9c34f32e7e7a330f06480f65765018fe

Using wpt-import in Chromium 1371cd7f9bc1add91412ee0d581b3f46b348b102.
With Chromium commits locally applied on WPT:
b740d45d9a "Fixing 'grid' and 'grid-template' shorthand failures"


Note to sheriffs: This CL imports external tests and adds
expectations for those tests; if this CL is large and causes
a few new failures, please fix the failures by adding new
lines to TestExpectations rather than reverting. See:
https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md

Directory owners for changes in this CL:
jsbell@chromium.org, mek@chromium.org:
  external/wpt/FileAPI

NOAUTOREVERT=true
R=rubber-stamper@appspot.gserviceaccount.com

No-Export: true
Cq-Include-Trybots: luci.chromium.try:linux-wpt-identity-fyi-rel,linux-wpt-input-fyi-rel
Change-Id: I07ab12e0656bdd2d6c7636990e5b063e5d916f24
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3379689
Auto-Submit: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#957427}