GitLab

Replaces web_tests with WPT tests to ensure cross-browser compatibility
in the future.

Bug: 535764
Change-Id: Ice3b2bd0589a8aff83a0f50f7bcd2d2ff6938989
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2365332
Commit-Queue: Olivier Yiptong <oyiptong@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800345}