Import wpt@7a54b4d831b271f678fac355f3a9c8285701512f

Using wpt-import in Chromium c46e9b4934a4a90c4d02366db5bc5009d373b61b.
With Chromium commits locally applied on WPT:
68d5240e06 "[ChromeDriver] Set key modifiers with mouse actions"
682affef9b "Implemented setPlaybackRate for scroll-linked Worklet Animations."
2b037bdc25 "[Animation Worklet] Fix flaky worklet-animation-with-fill-mode.https.html"
5a7d4abb1f "IndexedDB: Fix WPT bindings-inject-key to clean up Object.prototype"


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/+/master/docs/testing/web_platform_tests.md

Directory owners for changes in this CL:
guidou@chromium.org:
  external/wpt/mediacapture-streams
kenneth.r.christiansen@intel.com, rijubrata.bhaumik@intel.com:
  external/wpt/web-nfc
kojii@chromium.org:
  external/wpt/css/css-text/line-break
meade@chromium.org:
  external/wpt/web-animations
msisov@igalia.com:
  external/wpt/webvtt
rouslan@chromium.org, mathp@chromium.org:
  external/wpt/payment-request
skobes@chromium.org:
  external/wpt/css/css-scroll-anchoring
yhirano@chromium.org, mkwst@chromium.org, japhet@chromium.org:
  external/wpt/fetch

NOAUTOREVERT=true
TBR=robertma

No-Export: true
Change-Id: I3fc26ef8e8f00f1d7d29d71cb7597845c975e445
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1501758
Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#637618}
1320 files changed