Bug 1638136 [wpt PR 23617] - Clipboard API Tests: Move permissions tests to WPT....

Bug 1638136 [wpt PR 23617] - Clipboard API Tests: Move permissions tests to WPT., a=testonly

Automatic update from web-platform-tests
Clipboard API Tests: Move permissions tests to WPT.

Since https://github.com/web-platform-tests/wpt/pull/20461 and
https://github.com/web-platform-tests/wpt/issues/5671 were fixed, it now
becomes possible to automate some Web Platform Tests, and have them run
on all browsers automatically.

Clipboard API permission tests were previously outside WPT in order to
automate permissions using PermissionsHelper and detect regressions.

This allows us to share our permissions tests with other browsers
testing using WPT.

Bug: 1076691
Change-Id: I1ff6a8bbdf60b8d77fd8621efce840739fbeec23
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2200278
Auto-Submit: Darwin Huang <huangdarwin@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#769171}

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wpt-commits: 290d03696f5008625c2ebd1bfaf37eb9bff5bd79
wpt-pr: 23617