Bug 1459006 [wpt PR 10827] - Implement FeaturePolicy sync-script (as …

…an experimental feature policy), a=testonly

Automatic update from web-platform-testsImplement FeaturePolicy sync-script (as an experimental feature policy)

Spec discussion: https://github.com/WICG/feature-policy/issues/135
Intent to implement: https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/b7f_K30MBYo

Bug: 862422
Change-Id: Icd8a5d747373a819c7073ac459b5e8823d7986a8
Reviewed-on: https://chromium-review.googlesource.com/894137
Reviewed-by: Ojan Vafai <ojanchromium.org>
Reviewed-by: Hiroshige Hayashizaki <hiroshigechromium.org>
Reviewed-by: Ian Clelland <iclellandchromium.org>
Commit-Queue: Nate Chapin <japhetchromium.org>
Cr-Commit-Position: refs/heads/master{#576652}

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wpt-commits: 0cc3831f4c19152ec28b4a1fa600baace321c775
wpt-pr: 10827

UltraBlame original commit: a1f1e78ef7757951af1102a8d93d649812c9c8ae