GitLab

This patch converts the layout test with W3C testharness to allow
cross-platform evaluation of the test cases.

Change-Id: Ifba919b388f8a6c6de062f8615d0547fac2d2ca6
Reviewed-on: https://chromium-review.googlesource.com/c/1336661Reviewed-by: Yoichi Osato <yoichio@chromium.org>
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608259}