Import web-platform-tests@7dda9a13574b33d55a73e995e3d1f1fbd4da0f2b

Using update-w3c-deps in Blink 2599bb8937ac95bf0f447960b4e61464aa640e49.

R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/1483983003

Cr-Commit-Position: refs/heads/master@{#362222}
5 files changed