Import wpt@3c8896ae408c8fd594979da7c99970029e7856a7

Using update-w3c-deps in Chromium 48b3b7a226affaa6e4f009da74252f185238e366.

Build: https://build.chromium.org/p/chromium.infra.cron/builders/w3c-test-autoroller/builds/7815

TBR=qyearsley@chromium.org
NOEXPORT=true

Review-Url: https://codereview.chromium.org/2547023002
Cr-Commit-Position: refs/heads/master@{#435953}
362 files changed